HSL(237, 40%, 18%)

Blue — Blue color

Adjust Color

Color Information

Color Name

Blue

Color Family

Blue

Warm / Cool

🔵 Cool

Temperature

9000K

CSS Class

bg-[hsl(237,40%,18%)]

Color Conversions

Format Value CSS Usage
HSL hsl(237, 40%, 18%) color: hsl(237, 40%, 18%)
HEX #1C1D40 color: #1C1D40
RGB rgb(28, 29, 64) color: rgb(28, 29, 64)
CMYK cmyk(56%, 55%, 0%, 75%) —
HSV hsv(238, 56%, 25%) —
HWB hwb(238 11% 75%) color: hwb(238 11% 75%)
OKLCH oklch(0.2507 0.065 279.38) color: oklch(0.2507 0.065 279.38)
Lab lab(12.58 11.15 -22.54) color: lab(12.58 11.15 -22.54)
LCH lch(12.58 25.15 296.32) color: lch(12.58 25.15 296.32)

Color Theory

Complementary

Triadic

Analogous

Tetradic (Square)

Split-Complementary

Accessibility (WCAG)

White text on color

Black text on color

Color on white bg

Colored text

Contrast Ratios

vs White 16.16:1
vs Black 1.3:1

AA Normal (4.5:1)

on White: PASS ✓ on Black: FAIL ✗

AA Large (3:1)

on White: PASS ✓ on Black: FAIL ✗

AAA Normal (7:1)

on White: PASS ✓

Best text on this color: white

Color Blindness Simulation

Protanopia (Red-blind)

#1C1C38 — rgb(28, 28, 56)

Deuteranopia (Green-blind)

#1C1C36 — rgb(28, 28, 54)

Tritanopia (Blue-blind)

#1C312F — rgb(28, 49, 47)

Tints & Shades

Tints (Lighter →)

← Shades (Darker)

Saturation (0% → 100%)

CSS Code Snippets

background

background-color: hsl(237, 40%, 18%);

text

color: hsl(237, 40%, 18%);

border

border: 2px solid hsl(237, 40%, 18%);

gradient light

background: linear-gradient(to right, hsl(237, 40%, 38%), hsl(237, 40%, 18%));

gradient dark

background: linear-gradient(to right, hsl(237, 40%, 18%), hsl(237, 40%, 0%))

hex

background-color: #1C1D40;

tailwind

bg-[hsl(237,40%,18%)]

box shadow

box-shadow: 0 4px 6px -1px hsl(237, 40%, 18%, 0.4);

css variable

--color-primary: hsl(237, 40%, 18%);

Related Colors

#252637

237,20,18

#121549

237,60,18

#000000

237,40,0

#3A3E88

237,40,38

#1C2740

222,40,18

#1C2340

227,40,18

#201C40

247,40,18

#231C40

252,40,18

Use Cases for Blue

Corporate branding Trust signals Tech products Social media Primary buttons

Frequently Asked Questions

What are all the color codes for HSL(237, 40%, 18%)?

HEX: #1C1D40 | RGB: rgb(28, 29, 64) | CMYK: 56%, 55%, 0%, 75% | HSV: 238°, 56%, 25%. Copy any format from the conversion table above.

What colors go well with #1C1D40?

The complementary color is HSL(57, 40%, 18%). For a triadic harmony, use hues 237°, 357°, and 117°. For analogous combinations, try hues 207° and 267°. See the Color Harmony section above for complete palettes with previews.

How do I use HSL(237, 40%, 18%) in CSS?

As HSL: color: hsl(237, 40%, 18%); — As HEX: color: #1C1D40; — As RGB: color: rgb(28, 29, 64); — Tailwind CSS: bg-[hsl(237,40%,18%)] — CSS variable: --color-primary: hsl(237, 40%, 18%);