#02183B#02183B

#02183B is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 21.6% C 0.074 H 258.2°. Best body text is #FFFFFF at 17.55:1 contrast (WCAG AA passes).

Color values

HEX	#02183B
RGB	rgb(2, 24, 59)
HSL	hsl(217, 93%, 12%)
HSV	hsv(217, 97%, 23%)
CMYK	cmyk(96.6%, 59.3%, 0%, 76.9%)
CIE-LAB	lab(8.84, 7.42, -25.10)
CIE-LCH	lch(8.84, 26.18, 286.46°)
OKLab	oklab(21.65% -0.0151 -0.0724)
OKLCH	oklch(21.65% 0.074 258.2)
XYZ	xyz(1.1408, 0.9818, 4.2662)
Luminance	0.0098 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#02183B #3B2502

analogous

#02353B #02183B #08023B

triadic

#02183B #3B0218 #183B02

tetradic

#02183B #3B0235 #3B2502 #023B08

square

#02183B #3B0235 #3B2502 #023B08

split-complementary

#02183B #3B0802 #353B02

monochromatic

#010C1E #010C1E #02183B #043076 #0648B1

Accessibility & contrast

On white

17.55

#02183B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#02183B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #02183B

17.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##02183B	#FFFFFF	#000000	##FFFFFF
##02183B	1.00	17.55	1.20	17.55
#FFFFFF	17.55	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#021C3C

Deuteranopia (green-blind)

#00173A

Tritanopia (blue-blind)

#002126

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #02183b;
/* rgb */ color: rgb(2, 24, 59);
/* oklch */ color: oklch(21.6% 0.074 258.2);

Tailwind

colors: {
  custom: {
    50: '#4e5471',
    500: '#02183b',
    950: '#000000',
  },
}

SCSS

$custom: #02183b;
$custom-light: #4e5471;
$custom-dark: #000000;

JSON

{
  "hex": "#02183b",
  "rgb": {
    "r": 2,
    "g": 24,
    "b": 59
  },
  "hsl": {
    "h": 216.842,
    "s": 93.443,
    "l": 11.961
  },
  "oklch": {
    "l": 0.21647,
    "c": 0.07397,
    "h": 258.2
  },
  "luminance": 0.00982
}

Semantic roles & 50–950 ramp

primary

#02183B

secondary

#7E581A

accent

#AC29FF

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020207

muted

#78787A

Preview Lab

Preview with #02183B

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

Preview Lab → · Contrast checker → · Palette generator →