#18243C#18243C

#18243C is a dark, muted blue. Relative luminance 0.018; OKLCH L 26.2% C 0.048 H 263.3°. Best body text is #FFFFFF at 15.48:1 contrast (WCAG AA passes).

Color values

HEX	#18243C
RGB	rgb(24, 36, 60)
HSL	hsl(220, 43%, 16%)
HSV	hsv(220, 60%, 24%)
CMYK	cmyk(60%, 40%, 0%, 76.5%)
CIE-LAB	lab(14.30, 3.24, -17.02)
CIE-LCH	lch(14.30, 17.33, 280.77°)
OKLab	oklab(26.22% -0.0057 -0.048)
OKLCH	oklch(26.22% 0.048 263.3)
XYZ	xyz(1.8229, 1.7821, 4.5220)
Luminance	0.0178 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18243C #3C3018

analogous

#18363C #18243C #1E183C

triadic

#18243C #3C1824 #243C18

tetradic

#18243C #3C1836 #3C3018 #183C1E

square

#18243C #3C1836 #3C3018 #183C1E

split-complementary

#18243C #3C1E18 #363C18

monochromatic

#090D16 #090D16 #18243C #293E68 #3B5893

Accessibility & contrast

On white

15.48

#18243C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#18243C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18243C

15.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18243C	#FFFFFF	#000000	##FFFFFF
##18243C	1.00	15.48	1.36	15.48
#FFFFFF	15.48	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B263D

Deuteranopia (green-blind)

#16233B

Tritanopia (blue-blind)

#07292D

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #18243c;
/* rgb */ color: rgb(24, 36, 60);
/* oklch */ color: oklch(26.2% 0.048 263.3);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#18243c",
  "rgb": {
    "r": 24,
    "g": 36,
    "b": 60
  },
  "hsl": {
    "h": 220,
    "s": 42.857,
    "l": 16.471
  },
  "oklch": {
    "l": 0.26222,
    "c": 0.04834,
    "h": 263.3
  },
  "luminance": 0.01782
}

Semantic roles & 50–950 ramp

primary

#18243C

secondary

#72613E

accent

#A955D3

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030408

muted

#78797B

Preview Lab

Preview with #18243C

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

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