#18203C#18203C

#18203C is a dark, muted blue. Relative luminance 0.016; OKLCH L 25.2% C 0.054 H 270.1°. Best body text is #FFFFFF at 16.02:1 contrast (WCAG AA passes).

Color values

HEX	#18203C
RGB	rgb(24, 32, 60)
HSL	hsl(227, 43%, 16%)
HSV	hsv(227, 60%, 24%)
CMYK	cmyk(60%, 46.7%, 0%, 76.5%)
CIE-LAB	lab(12.94, 6.22, -19.16)
CIE-LCH	lch(12.94, 20.15, 287.99°)
OKLab	oklab(25.17% 0.0001 -0.0543)
OKLCH	oklch(25.17% 0.054 270.1)
XYZ	xyz(1.7085, 1.5533, 4.4839)
Luminance	0.0155 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18203C #3C3418

analogous

#18323C #18203C #22183C

triadic

#18203C #3C1820 #203C18

tetradic

#18203C #3C1832 #3C3418 #183C22

square

#18203C #3C1832 #3C3418 #183C22

split-complementary

#18203C #3C2218 #323C18

monochromatic

#090C16 #090C16 #18203C #293768 #3B4F93

Accessibility & contrast

On white

16.02

#18203C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#18203C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18203C

16.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18203C	#FFFFFF	#000000	##FFFFFF
##18203C	1.00	16.02	1.31	16.02
#FFFFFF	16.02	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#15233D

Deuteranopia (green-blind)

#11203B

Tritanopia (blue-blind)

#08262B

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #18203c;
/* rgb */ color: rgb(24, 32, 60);
/* oklch */ color: oklch(25.2% 0.054 270.1);

Tailwind

colors: {
  custom: {
    50: '#585b72',
    500: '#18203c',
    950: '#000000',
  },
}

SCSS

$custom: #18203c;
$custom-light: #585b72;
$custom-dark: #000000;

JSON

{
  "hex": "#18203c",
  "rgb": {
    "r": 24,
    "g": 32,
    "b": 60
  },
  "hsl": {
    "h": 226.667,
    "s": 42.857,
    "l": 16.471
  },
  "oklch": {
    "l": 0.25174,
    "c": 0.0543,
    "h": 270.1
  },
  "luminance": 0.01553
}

Semantic roles & 50–950 ramp

primary

#18203C

secondary

#72673E

accent

#B755D3

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030408

muted

#78797B

Preview Lab

Preview with #18203C

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

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