#181D38#181D38

#181D38 is a very dark, muted blue. Relative luminance 0.014; OKLCH L 24.1% C 0.052 H 273.9°. Best body text is #FFFFFF at 16.51:1 contrast (WCAG AA passes).

Color values

HEX	#181D38
RGB	rgb(24, 29, 56)
HSL	hsl(231, 40%, 16%)
HSV	hsv(231, 57%, 22%)
CMYK	cmyk(57.1%, 48.2%, 0%, 78%)
CIE-LAB	lab(11.68, 6.93, -18.33)
CIE-LCH	lch(11.68, 19.60, 290.72°)
OKLab	oklab(24.12% 0.0036 -0.0519)
OKLCH	oklch(24.12% 0.052 273.9)
XYZ	xyz(1.5296, 1.3584, 3.9222)
Luminance	0.0136 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D38 #383318

analogous

#182D38 #181D38 #231838

triadic

#181D38 #38181D #1D3818

tetradic

#181D38 #38182D #383318 #183823

square

#181D38 #38182D #383318 #183823

split-complementary

#181D38 #382318 #2D3818

monochromatic

#090B15 #090B15 #181D38 #2A3363 #3D498E

Accessibility & contrast

On white

16.51

#181D38 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#181D38 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D38

16.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D38	#FFFFFF	#000000	##FFFFFF
##181D38	1.00	16.51	1.27	16.51
#FFFFFF	16.51	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#122039

Deuteranopia (green-blind)

#0F1E37

Tritanopia (blue-blind)

#0B2327

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #181d38;
/* rgb */ color: rgb(24, 29, 56);
/* oklch */ color: oklch(24.1% 0.052 273.9);

Tailwind

colors: {
  custom: {
    50: '#57586f',
    500: '#181d38',
    950: '#000000',
  },
}

SCSS

$custom: #181d38;
$custom-light: #57586f;
$custom-dark: #000000;

JSON

{
  "hex": "#181d38",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 56
  },
  "hsl": {
    "h": 230.625,
    "s": 40,
    "l": 15.686
  },
  "oklch": {
    "l": 0.24117,
    "c": 0.05201,
    "h": 273.9
  },
  "luminance": 0.01358
}

Semantic roles & 50–950 ramp

primary

#181D38

secondary

#6E663E

accent

#BD58D0

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030307

muted

#78787A

Preview Lab

Preview with #181D38

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

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