#18213B#18213B

#18213B is a dark, muted blue. Relative luminance 0.016; OKLCH L 25.4% C 0.051 H 268.2°. Best body text is #FFFFFF at 15.91:1 contrast (WCAG AA passes).

Color values

HEX	#18213B
RGB	rgb(24, 33, 59)
HSL	hsl(225, 42%, 16%)
HSV	hsv(225, 59%, 23%)
CMYK	cmyk(59.3%, 44.1%, 0%, 76.9%)
CIE-LAB	lab(13.22, 5.08, -18.03)
CIE-LCH	lch(13.22, 18.73, 285.73°)
OKLab	oklab(25.36% -0.0016 -0.051)
OKLCH	oklch(25.36% 0.051 268.2)
XYZ	xyz(1.7097, 1.5976, 4.3551)
Luminance	0.0160 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18213B #3B3218

analogous

#18333B #18213B #21183B

triadic

#18213B #3B1821 #213B18

tetradic

#18213B #3B1833 #3B3218 #183B21

square

#18213B #3B1833 #3B3218 #183B21

split-complementary

#18213B #3B2118 #333B18

monochromatic

#090C16 #090C16 #18213B #2A3967 #3B5292

Accessibility & contrast

On white

15.91

#18213B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#18213B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18213B

15.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18213B	#FFFFFF	#000000	##FFFFFF
##18213B	1.00	15.91	1.32	15.91
#FFFFFF	15.91	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17243C

Deuteranopia (green-blind)

#13213A

Tritanopia (blue-blind)

#08272B

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #18213b;
/* rgb */ color: rgb(24, 33, 59);
/* oklch */ color: oklch(25.4% 0.051 268.2);

Tailwind

colors: {
  custom: {
    50: '#585b71',
    500: '#18213b',
    950: '#000000',
  },
}

SCSS

$custom: #18213b;
$custom-light: #585b71;
$custom-dark: #000000;

JSON

{
  "hex": "#18213b",
  "rgb": {
    "r": 24,
    "g": 33,
    "b": 59
  },
  "hsl": {
    "h": 224.571,
    "s": 42.169,
    "l": 16.275
  },
  "oklch": {
    "l": 0.25363,
    "c": 0.051,
    "h": 268.2
  },
  "luminance": 0.01598
}

Semantic roles & 50–950 ramp

primary

#18213B

secondary

#71643E

accent

#B256D2

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030407

muted

#78797A

Preview Lab

Preview with #18213B

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

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