#18203B#18203B

#18203B is a dark, muted blue. Relative luminance 0.015; OKLCH L 25.1% C 0.053 H 269.9°. Best body text is #FFFFFF at 16.05:1 contrast (WCAG AA passes).

Color values

HEX	#18203B
RGB	rgb(24, 32, 59)
HSL	hsl(226, 42%, 16%)
HSV	hsv(226, 59%, 23%)
CMYK	cmyk(59.3%, 45.8%, 0%, 76.9%)
CIE-LAB	lab(12.88, 5.83, -18.56)
CIE-LCH	lch(12.88, 19.45, 287.44°)
OKLab	oklab(25.1% -0.0001 -0.0525)
OKLCH	oklch(25.1% 0.053 269.9)
XYZ	xyz(1.6824, 1.5429, 4.3460)
Luminance	0.0154 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18203B #3B3318

analogous

#18323B #18203B #22183B

triadic

#18203B #3B1820 #203B18

tetradic

#18203B #3B1832 #3B3318 #183B22

square

#18203B #3B1832 #3B3318 #183B22

split-complementary

#18203B #3B2218 #323B18

monochromatic

#090C16 #090C16 #18203B #2A3867 #3B4F92

Accessibility & contrast

On white

16.05

#18203B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#18203B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18203B

16.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18203B	#FFFFFF	#000000	##FFFFFF
##18203B	1.00	16.05	1.31	16.05
#FFFFFF	16.05	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#15233C

Deuteranopia (green-blind)

#11203A

Tritanopia (blue-blind)

#08262A

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #18203b;
/* rgb */ color: rgb(24, 32, 59);
/* oklch */ color: oklch(25.1% 0.053 269.9);

Tailwind

colors: {
  custom: {
    50: '#585b71',
    500: '#18203b',
    950: '#000000',
  },
}

SCSS

$custom: #18203b;
$custom-light: #585b71;
$custom-dark: #000000;

JSON

{
  "hex": "#18203b",
  "rgb": {
    "r": 24,
    "g": 32,
    "b": 59
  },
  "hsl": {
    "h": 226.286,
    "s": 42.169,
    "l": 16.275
  },
  "oklch": {
    "l": 0.25103,
    "c": 0.05253,
    "h": 269.9
  },
  "luminance": 0.01543
}

Semantic roles & 50–950 ramp

primary

#18203B

secondary

#71653E

accent

#B656D2

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030407

muted

#78797A

Preview Lab

Preview with #18203B

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

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