#283C84#283C84

#283C84 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.3% C 0.123 H 268.3°. Best body text is #FFFFFF at 10.15:1 contrast (WCAG AA passes).

Color values

HEX	#283C84
RGB	rgb(40, 60, 132)
HSL	hsl(227, 53%, 34%)
HSV	hsv(227, 70%, 52%)
CMYK	cmyk(69.7%, 54.5%, 0%, 48.2%)
CIE-LAB	lab(27.70, 17.70, -42.90)
CIE-LCH	lch(27.70, 46.41, 292.41°)
OKLab	oklab(38.33% -0.0036 -0.1233)
OKLCH	oklch(38.33% 0.123 268.3)
XYZ	xyz(6.6544, 5.3481, 22.5069)
Luminance	0.0535 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283C84 #847028

analogous

#286A84 #283C84 #422884

triadic

#283C84 #84283C #3C8428

tetradic

#283C84 #84286A #847028 #288442

square

#283C84 #84286A #847028 #288442

split-complementary

#283C84 #844228 #6A8428

monochromatic

#0C1126 #1A2755 #283C84 #3651B3 #5A73CD

Accessibility & contrast

On white

10.15

#283C84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#283C84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283C84

10.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283C84	#FFFFFF	#000000	##FFFFFF
##283C84	1.00	10.15	2.07	10.15
#FFFFFF	10.15	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C4687

Deuteranopia (green-blind)

#003D83

Tritanopia (blue-blind)

#004D5A

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #283c84;
/* rgb */ color: rgb(40, 60, 132);
/* oklch */ color: oklch(38.3% 0.123 268.3);

Tailwind

colors: {
  custom: {
    50: '#6e71a8',
    500: '#283c84',
    950: '#000000',
  },
}

SCSS

$custom: #283c84;
$custom-light: #6e71a8;
$custom-dark: #000000;

JSON

{
  "hex": "#283c84",
  "rgb": {
    "r": 40,
    "g": 60,
    "b": 132
  },
  "hsl": {
    "h": 226.957,
    "s": 53.488,
    "l": 33.725
  },
  "oklch": {
    "l": 0.38332,
    "c": 0.12333,
    "h": 268.3
  },
  "luminance": 0.05349
}

Semantic roles & 50–950 ramp

primary

#283C84

secondary

#B29E56

accent

#BD4BDD

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #283C84

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

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