#283C83#283C83

#283C83 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.3% C 0.122 H 268.3°. Best body text is #FFFFFF at 10.17:1 contrast (WCAG AA passes).

Color values

HEX	#283C83
RGB	rgb(40, 60, 131)
HSL	hsl(227, 53%, 34%)
HSV	hsv(227, 69%, 51%)
CMYK	cmyk(69.5%, 54.2%, 0%, 48.6%)
CIE-LAB	lab(27.63, 17.31, -42.40)
CIE-LCH	lch(27.63, 45.80, 292.21°)
OKLab	oklab(38.25% -0.0036 -0.1218)
OKLCH	oklch(38.25% 0.122 268.3)
XYZ	xyz(6.5863, 5.3209, 22.1483)
Luminance	0.0532 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283C83 #836F28

analogous

#286983 #283C83 #412883

triadic

#283C83 #83283C #3C8328

tetradic

#283C83 #832869 #836F28 #288341

square

#283C83 #832869 #836F28 #288341

split-complementary

#283C83 #834128 #698328

monochromatic

#0B1125 #1A2754 #283C83 #3651B2 #5972CC

Accessibility & contrast

On white

10.17

#283C83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#283C83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283C83

10.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283C83	#FFFFFF	#000000	##FFFFFF
##283C83	1.00	10.17	2.06	10.17
#FFFFFF	10.17	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E4686

Deuteranopia (green-blind)

#003D82

Tritanopia (blue-blind)

#004D59

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #283c83;
/* rgb */ color: rgb(40, 60, 131);
/* oklch */ color: oklch(38.3% 0.122 268.3);

Tailwind

colors: {
  custom: {
    50: '#6d71a8',
    500: '#283c83',
    950: '#000000',
  },
}

SCSS

$custom: #283c83;
$custom-light: #6d71a8;
$custom-dark: #000000;

JSON

{
  "hex": "#283c83",
  "rgb": {
    "r": 40,
    "g": 60,
    "b": 131
  },
  "hsl": {
    "h": 226.813,
    "s": 53.216,
    "l": 33.529
  },
  "oklch": {
    "l": 0.38252,
    "c": 0.12184,
    "h": 268.3
  },
  "luminance": 0.05322
}

Semantic roles & 50–950 ramp

primary

#283C83

secondary

#B19D55

accent

#BD4BDD

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#08070F

muted

#7B7A7F

Preview Lab

Preview with #283C83

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

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