#181C4C#181C4C

#181C4C is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.5% C 0.088 H 274.7°. Best body text is #FFFFFF at 16.04:1 contrast (WCAG AA passes).

Color values

HEX	#181C4C
RGB	rgb(24, 28, 76)
HSL	hsl(235, 52%, 20%)
HSV	hsv(235, 68%, 30%)
CMYK	cmyk(68.4%, 63.2%, 0%, 70.2%)
CIE-LAB	lab(12.90, 15.65, -30.39)
CIE-LCH	lch(12.90, 34.18, 297.25°)
OKLab	oklab(25.53% 0.0073 -0.0873)
OKLCH	oklch(25.53% 0.088 274.7)
XYZ	xyz(2.0960, 1.5463, 7.0241)
Luminance	0.0155 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181C4C #4C4818

analogous

#18364C #181C4C #2E184C

triadic

#181C4C #4C181C #1C4C18

tetradic

#181C4C #4C1836 #4C4818 #184C2E

square

#181C4C #4C1836 #4C4818 #184C2E

split-complementary

#181C4C #4C2E18 #364C18

monochromatic

#070917 #090B1D #181C4C #272D7B #353EA9

Accessibility & contrast

On white

16.04

#181C4C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#181C4C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181C4C

16.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181C4C	#FFFFFF	#000000	##FFFFFF
##181C4C	1.00	16.04	1.31	16.04
#FFFFFF	16.04	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00244E

Deuteranopia (green-blind)

#001F4B

Tritanopia (blue-blind)

#002830

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #181c4c;
/* rgb */ color: rgb(24, 28, 76);
/* oklch */ color: oklch(25.5% 0.088 274.7);

Tailwind

colors: {
  custom: {
    50: '#5c587e',
    500: '#181c4c',
    950: '#000000',
  },
}

SCSS

$custom: #181c4c;
$custom-light: #5c587e;
$custom-dark: #000000;

JSON

{
  "hex": "#181c4c",
  "rgb": {
    "r": 24,
    "g": 28,
    "b": 76
  },
  "hsl": {
    "h": 235.385,
    "s": 52,
    "l": 19.608
  },
  "oklch": {
    "l": 0.25532,
    "c": 0.08762,
    "h": 274.7
  },
  "luminance": 0.01547
}

Semantic roles & 50–950 ramp

primary

#181C4C

secondary

#837D3D

accent

#D04CDB

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #181C4C

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →