#183983#183983

#183983 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 36.8% C 0.131 H 263.3°. Best body text is #FFFFFF at 10.76:1 contrast (WCAG AA passes).

Color values

HEX	#183983
RGB	rgb(24, 57, 131)
HSL	hsl(221, 69%, 30%)
HSV	hsv(221, 82%, 51%)
CMYK	cmyk(81.7%, 56.5%, 0%, 48.6%)
CIE-LAB	lab(26.04, 17.18, -45.02)
CIE-LCH	lch(26.04, 48.18, 290.89°)
OKLab	oklab(36.85% -0.0153 -0.1299)
OKLCH	oklch(36.85% 0.131 263.3)
XYZ	xyz(5.9351, 4.7584, 22.0740)
Luminance	0.0476 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183983 #836218

analogous

#186E83 #183983 #2C1883

triadic

#183983 #831839 #398318

tetradic

#183983 #83186E #836218 #18832C

square

#183983 #83186E #836218 #18832C

split-complementary

#183983 #832C18 #6E8318

monochromatic

#050C1C #0F224F #183983 #2150B7 #3A6CDB

Accessibility & contrast

On white

10.76

#183983 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#183983 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183983

10.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183983	#FFFFFF	#000000	##FFFFFF
##183983	1.00	10.76	1.95	10.76
#FFFFFF	10.76	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004386

Deuteranopia (green-blind)

#003982

Tritanopia (blue-blind)

#004B58

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #183983;
/* rgb */ color: rgb(24, 57, 131);
/* oklch */ color: oklch(36.8% 0.131 263.3);

Tailwind

colors: {
  custom: {
    50: '#686ea8',
    500: '#183983',
    950: '#000000',
  },
}

SCSS

$custom: #183983;
$custom-light: #686ea8;
$custom-dark: #000000;

JSON

{
  "hex": "#183983",
  "rgb": {
    "r": 24,
    "g": 57,
    "b": 131
  },
  "hsl": {
    "h": 221.495,
    "s": 69.032,
    "l": 30.392
  },
  "oklch": {
    "l": 0.36845,
    "c": 0.13075,
    "h": 263.3
  },
  "luminance": 0.04759
}

Semantic roles & 50–950 ramp

primary

#183983

secondary

#B79240

accent

#B63CEC

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #183983

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

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