#283D85#283D85

#283D85 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.6% C 0.123 H 267.9°. Best body text is #FFFFFF at 10.02:1 contrast (WCAG AA passes).

Color values

HEX	#283D85
RGB	rgb(40, 61, 133)
HSL	hsl(226, 54%, 34%)
HSV	hsv(226, 70%, 52%)
CMYK	cmyk(69.9%, 54.1%, 0%, 47.8%)
CIE-LAB	lab(28.06, 17.39, -42.94)
CIE-LCH	lch(28.06, 46.33, 292.05°)
OKLab	oklab(38.63% -0.0044 -0.1234)
OKLCH	oklch(38.63% 0.123 267.9)
XYZ	xyz(6.7760, 5.4814, 22.8867)
Luminance	0.0548 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283D85 #857028

analogous

#286C85 #283D85 #422885

triadic

#283D85 #85283D #3D8528

tetradic

#283D85 #85286C #857028 #288542

square

#283D85 #85286C #857028 #288542

split-complementary

#283D85 #854228 #6C8528

monochromatic

#0C1227 #1A2756 #283D85 #3653B4 #5A74CD

Accessibility & contrast

On white

10.02

#283D85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#283D85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283D85

10.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283D85	#FFFFFF	#000000	##FFFFFF
##283D85	1.00	10.02	2.10	10.02
#FFFFFF	10.02	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E4788

Deuteranopia (green-blind)

#003E84

Tritanopia (blue-blind)

#004E5B

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #283d85;
/* rgb */ color: rgb(40, 61, 133);
/* oklch */ color: oklch(38.6% 0.123 267.9);

Tailwind

colors: {
  custom: {
    50: '#6e72a9',
    500: '#283d85',
    950: '#000000',
  },
}

SCSS

$custom: #283d85;
$custom-light: #6e72a9;
$custom-dark: #000000;

JSON

{
  "hex": "#283d85",
  "rgb": {
    "r": 40,
    "g": 61,
    "b": 133
  },
  "hsl": {
    "h": 226.452,
    "s": 53.757,
    "l": 33.922
  },
  "oklch": {
    "l": 0.38627,
    "c": 0.12346,
    "h": 267.9
  },
  "luminance": 0.05482
}

Semantic roles & 50–950 ramp

primary

#283D85

secondary

#B39E56

accent

#BC4BDD

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #283D85

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

Preview Lab → · Contrast checker → · Palette generator →