#283B82#283B82

#283B82 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.0% C 0.122 H 268.7°. Best body text is #FFFFFF at 10.30:1 contrast (WCAG AA passes).

Color values

HEX	#283B82
RGB	rgb(40, 59, 130)
HSL	hsl(227, 53%, 33%)
HSV	hsv(227, 69%, 51%)
CMYK	cmyk(69.2%, 54.6%, 0%, 49%)
CIE-LAB	lab(27.27, 17.61, -42.36)
CIE-LCH	lch(27.27, 45.87, 292.58°)
OKLab	oklab(37.96% -0.0028 -0.1217)
OKLCH	oklch(37.96% 0.122 268.7)
XYZ	xyz(6.4669, 5.1901, 21.7758)
Luminance	0.0519 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283B82 #826F28

analogous

#286882 #283B82 #422882

triadic

#283B82 #82283B #3B8228

tetradic

#283B82 #822868 #826F28 #288242

square

#283B82 #822868 #826F28 #288242

split-complementary

#283B82 #824228 #688228

monochromatic

#0B1124 #1A2653 #283B82 #3650B1 #5971CC

Accessibility & contrast

On white

10.30

#283B82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#283B82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283B82

10.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283B82	#FFFFFF	#000000	##FFFFFF
##283B82	1.00	10.30	2.04	10.30
#FFFFFF	10.30	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C4585

Deuteranopia (green-blind)

#003D81

Tritanopia (blue-blind)

#004C58

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #283b82;
/* rgb */ color: rgb(40, 59, 130);
/* oklch */ color: oklch(38.0% 0.122 268.7);

Tailwind

colors: {
  custom: {
    50: '#6d70a7',
    500: '#283b82',
    950: '#000000',
  },
}

SCSS

$custom: #283b82;
$custom-light: #6d70a7;
$custom-dark: #000000;

JSON

{
  "hex": "#283b82",
  "rgb": {
    "r": 40,
    "g": 59,
    "b": 130
  },
  "hsl": {
    "h": 227.333,
    "s": 52.941,
    "l": 33.333
  },
  "oklch": {
    "l": 0.37956,
    "c": 0.12172,
    "h": 268.7
  },
  "luminance": 0.05191
}

Semantic roles & 50–950 ramp

primary

#283B82

secondary

#B19D55

accent

#BE4BDC

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#08070F

muted

#7A7A7F

Preview Lab

Preview with #283B82

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

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