#18243D#18243D

#18243D is a dark, muted blue. Relative luminance 0.018; OKLCH L 26.3% C 0.050 H 263.8°. Best body text is #FFFFFF at 15.46:1 contrast (WCAG AA passes).

Color values

HEX	#18243D
RGB	rgb(24, 36, 61)
HSL	hsl(221, 44%, 17%)
HSV	hsv(221, 61%, 24%)
CMYK	cmyk(60.7%, 41%, 0%, 76.1%)
CIE-LAB	lab(14.36, 3.63, -17.63)
CIE-LCH	lch(14.36, 18.00, 281.63°)
OKLab	oklab(26.29% -0.0054 -0.0498)
OKLCH	oklch(26.29% 0.05 263.8)
XYZ	xyz(1.8496, 1.7927, 4.6625)
Luminance	0.0179 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18243D #3D3118

analogous

#18373D #18243D #1F183D

triadic

#18243D #3D1824 #243D18

tetradic

#18243D #3D1837 #3D3118 #183D1F

square

#18243D #3D1837 #3D3118 #183D1F

split-complementary

#18243D #3D1F18 #373D18

monochromatic

#090D16 #090D16 #18243D #293E69 #3B5895

Accessibility & contrast

On white

15.46

#18243D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#18243D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18243D

15.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18243D	#FFFFFF	#000000	##FFFFFF
##18243D	1.00	15.46	1.36	15.46
#FFFFFF	15.46	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A263E

Deuteranopia (green-blind)

#16233C

Tritanopia (blue-blind)

#06292D

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #18243d;
/* rgb */ color: rgb(24, 36, 61);
/* oklch */ color: oklch(26.3% 0.050 263.8);

Tailwind

colors: {
  custom: {
    50: '#585e72',
    500: '#18243d',
    950: '#000000',
  },
}

SCSS

$custom: #18243d;
$custom-light: #585e72;
$custom-dark: #000000;

JSON

{
  "hex": "#18243d",
  "rgb": {
    "r": 24,
    "g": 36,
    "b": 61
  },
  "hsl": {
    "h": 220.541,
    "s": 43.529,
    "l": 16.667
  },
  "oklch": {
    "l": 0.26289,
    "c": 0.05006,
    "h": 263.8
  },
  "luminance": 0.01793
}

Semantic roles & 50–950 ramp

primary

#18243D

secondary

#73623D

accent

#AA55D3

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030408

muted

#78797B

Preview Lab

Preview with #18243D

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

Preview Lab → · Contrast checker → · Palette generator →