#18273D#18273D

#18273D is a dark, muted blue. Relative luminance 0.020; OKLCH L 27.1% C 0.046 H 257.8°. Best body text is #FFFFFF at 15.04:1 contrast (WCAG AA passes).

Color values

HEX	#18273D
RGB	rgb(24, 39, 61)
HSL	hsl(216, 44%, 17%)
HSV	hsv(216, 61%, 24%)
CMYK	cmyk(60.7%, 36.1%, 0%, 76.1%)
CIE-LAB	lab(15.39, 1.43, -16.00)
CIE-LCH	lch(15.39, 16.07, 275.11°)
OKLab	oklab(27.09% -0.0097 -0.045)
OKLCH	oklch(27.09% 0.046 257.8)
XYZ	xyz(1.9442, 1.9820, 4.6941)
Luminance	0.0198 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18273D #3D2E18

analogous

#183A3D #18273D #1C183D

triadic

#18273D #3D1827 #273D18

tetradic

#18273D #3D183A #3D2E18 #183D1C

square

#18273D #3D183A #3D2E18 #183D1C

split-complementary

#18273D #3D1C18 #3A3D18

monochromatic

#090E16 #090E16 #18273D #294369 #3B5F95

Accessibility & contrast

On white

15.04

#18273D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.40

#18273D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18273D

15.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18273D	#FFFFFF	#000000	##FFFFFF
##18273D	1.00	15.04	1.40	15.04
#FFFFFF	15.04	1.00	21.00	1.00
#000000	1.40	21.00	1.00	21.00
##FFFFFF	15.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E283E

Deuteranopia (green-blind)

#1A253D

Tritanopia (blue-blind)

#052C2F

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #18273d;
/* rgb */ color: rgb(24, 39, 61);
/* oklch */ color: oklch(27.1% 0.046 257.8);

Tailwind

colors: {
  custom: {
    50: '#586072',
    500: '#18273d',
    950: '#000000',
  },
}

SCSS

$custom: #18273d;
$custom-light: #586072;
$custom-dark: #000000;

JSON

{
  "hex": "#18273d",
  "rgb": {
    "r": 24,
    "g": 39,
    "b": 61
  },
  "hsl": {
    "h": 215.676,
    "s": 43.529,
    "l": 16.667
  },
  "oklch": {
    "l": 0.27093,
    "c": 0.04606,
    "h": 257.8
  },
  "luminance": 0.01982
}

Semantic roles & 50–950 ramp

primary

#18273D

secondary

#735D3D

accent

#A055D3

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030508

muted

#78797B

Preview Lab

Preview with #18273D

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

Preview Lab → · Contrast checker → · Palette generator →