#181A38#181A38

#181A38 is a very dark, muted blue. Relative luminance 0.012; OKLCH L 23.4% C 0.057 H 278.1°. Best body text is #FFFFFF at 16.88:1 contrast (WCAG AA passes).

Color values

HEX	#181A38
RGB	rgb(24, 26, 56)
HSL	hsl(236, 40%, 16%)
HSV	hsv(236, 57%, 22%)
CMYK	cmyk(57.1%, 53.6%, 0%, 78%)
CIE-LAB	lab(10.69, 9.23, -19.90)
CIE-LCH	lch(10.69, 21.94, 294.88°)
OKLab	oklab(23.37% 0.0081 -0.0565)
OKLCH	oklch(23.37% 0.057 278.1)
XYZ	xyz(1.4597, 1.2184, 3.8989)
Luminance	0.0122 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181A38 #383618

analogous

#182A38 #181A38 #261838

triadic

#181A38 #38181A #1A3818

tetradic

#181A38 #38182A #383618 #183826

square

#181A38 #38182A #383618 #183826

split-complementary

#181A38 #382618 #2A3818

monochromatic

#090A15 #090A15 #181A38 #2A2E63 #3D428E

Accessibility & contrast

On white

16.88

#181A38 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#181A38 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181A38

16.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181A38	#FFFFFF	#000000	##FFFFFF
##181A38	1.00	16.88	1.24	16.88
#FFFFFF	16.88	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D1E39

Deuteranopia (green-blind)

#0B1C37

Tritanopia (blue-blind)

#0C2026

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #181a38;
/* rgb */ color: rgb(24, 26, 56);
/* oklch */ color: oklch(23.4% 0.057 278.1);

Tailwind

colors: {
  custom: {
    50: '#57566f',
    500: '#181a38',
    950: '#000000',
  },
}

SCSS

$custom: #181a38;
$custom-light: #57566f;
$custom-dark: #000000;

JSON

{
  "hex": "#181a38",
  "rgb": {
    "r": 24,
    "g": 26,
    "b": 56
  },
  "hsl": {
    "h": 236.25,
    "s": 40,
    "l": 15.686
  },
  "oklch": {
    "l": 0.23366,
    "c": 0.05708,
    "h": 278.1
  },
  "luminance": 0.01219
}

Semantic roles & 50–950 ramp

primary

#181A38

secondary

#6E6B3E

accent

#C858D0

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030307

muted

#78787A

Preview Lab

Preview with #181A38

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

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