#283C85#283C85

#283C85 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.4% C 0.125 H 268.4°. Best body text is #FFFFFF at 10.12:1 contrast (WCAG AA passes).

Color values

HEX	#283C85
RGB	rgb(40, 60, 133)
HSL	hsl(227, 54%, 34%)
HSV	hsv(227, 70%, 52%)
CMYK	cmyk(69.9%, 54.9%, 0%, 47.8%)
CIE-LAB	lab(27.78, 18.08, -43.40)
CIE-LCH	lch(27.78, 47.02, 292.61°)
OKLab	oklab(38.41% -0.0035 -0.1247)
OKLCH	oklch(38.41% 0.125 268.4)
XYZ	xyz(6.7231, 5.3756, 22.8690)
Luminance	0.0538 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283C85 #857128

analogous

#286B85 #283C85 #432885

triadic

#283C85 #85283C #3C8528

tetradic

#283C85 #85286B #857128 #288543

square

#283C85 #85286B #857128 #288543

split-complementary

#283C85 #854328 #6B8528

monochromatic

#0C1227 #1A2756 #283C85 #3651B4 #5A73CD

Accessibility & contrast

On white

10.12

#283C85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#283C85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283C85

10.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283C85	#FFFFFF	#000000	##FFFFFF
##283C85	1.00	10.12	2.08	10.12
#FFFFFF	10.12	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#094688

Deuteranopia (green-blind)

#003E84

Tritanopia (blue-blind)

#004D5A

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #283c85;
/* rgb */ color: rgb(40, 60, 133);
/* oklch */ color: oklch(38.4% 0.125 268.4);

Tailwind

colors: {
  custom: {
    50: '#6e71a9',
    500: '#283c85',
    950: '#000000',
  },
}

SCSS

$custom: #283c85;
$custom-light: #6e71a9;
$custom-dark: #000000;

JSON

{
  "hex": "#283c85",
  "rgb": {
    "r": 40,
    "g": 60,
    "b": 133
  },
  "hsl": {
    "h": 227.097,
    "s": 53.757,
    "l": 33.922
  },
  "oklch": {
    "l": 0.38412,
    "c": 0.1248,
    "h": 268.4
  },
  "luminance": 0.05376
}

Semantic roles & 50–950 ramp

primary

#283C85

secondary

#B39F56

accent

#BE4BDD

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #283C85

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

Preview Lab → · Contrast checker → · Palette generator →