#02183A#02183A

#02183A is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 21.6% C 0.072 H 257.8°. Best body text is #FFFFFF at 17.58:1 contrast (WCAG AA passes).

Color values

HEX	#02183A
RGB	rgb(2, 24, 58)
HSL	hsl(216, 93%, 12%)
HSV	hsv(216, 97%, 23%)
CMYK	cmyk(96.6%, 58.6%, 0%, 77.3%)
CIE-LAB	lab(8.75, 6.92, -24.53)
CIE-LCH	lch(8.75, 25.49, 285.77°)
OKLab	oklab(21.55% -0.0153 -0.0707)
OKLCH	oklch(21.55% 0.072 257.8)
XYZ	xyz(1.1151, 0.9715, 4.1309)
Luminance	0.0097 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#02183A #3A2402

analogous

#02343A #02183A #08023A

triadic

#02183A #3A0218 #183A02

tetradic

#02183A #3A0234 #3A2402 #023A08

square

#02183A #3A0234 #3A2402 #023A08

split-complementary

#02183A #3A0802 #343A02

monochromatic

#010C1E #010C1E #02183A #043075 #0649B0

Accessibility & contrast

On white

17.58

#02183A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#02183A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #02183A

17.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##02183A	#FFFFFF	#000000	##FFFFFF
##02183A	1.00	17.58	1.19	17.58
#FFFFFF	17.58	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#031C3B

Deuteranopia (green-blind)

#001739

Tritanopia (blue-blind)

#002026

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #02183a;
/* rgb */ color: rgb(2, 24, 58);
/* oklch */ color: oklch(21.6% 0.072 257.8);

Tailwind

colors: {
  custom: {
    50: '#4e5470',
    500: '#02183a',
    950: '#000000',
  },
}

SCSS

$custom: #02183a;
$custom-light: #4e5470;
$custom-dark: #000000;

JSON

{
  "hex": "#02183a",
  "rgb": {
    "r": 2,
    "g": 24,
    "b": 58
  },
  "hsl": {
    "h": 216.429,
    "s": 93.333,
    "l": 11.765
  },
  "oklch": {
    "l": 0.21553,
    "c": 0.07235,
    "h": 257.8
  },
  "luminance": 0.00972
}

Semantic roles & 50–950 ramp

primary

#02183A

secondary

#7D571A

accent

#AB29FF

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020207

muted

#78787A

Preview Lab

Preview with #02183A

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

Preview Lab → · Contrast checker → · Palette generator →