#283F87#283F87

#283F87 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.2% C 0.124 H 267.2°. Best body text is #FFFFFF at 9.76:1 contrast (WCAG AA passes).

Color values

HEX	#283F87
RGB	rgb(40, 63, 135)
HSL	hsl(225, 54%, 34%)
HSV	hsv(225, 70%, 53%)
CMYK	cmyk(70.4%, 53.3%, 0%, 47.1%)
CIE-LAB	lab(28.79, 16.79, -43.02)
CIE-LCH	lch(28.79, 46.18, 291.31°)
OKLab	oklab(39.22% -0.0061 -0.1236)
OKLCH	oklch(39.22% 0.124 267.2)
XYZ	xyz(7.0242, 5.7547, 23.6576)
Luminance	0.0575 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283F87 #877028

analogous

#286F87 #283F87 #412887

triadic

#283F87 #87283F #3F8728

tetradic

#283F87 #87286F #877028 #288741

square

#283F87 #87286F #877028 #288741

split-complementary

#283F87 #874128 #6F8728

monochromatic

#0C1329 #1A2958 #283F87 #3655B6 #5B77CE

Accessibility & contrast

On white

9.76

#283F87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#283F87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283F87

9.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283F87	#FFFFFF	#000000	##FFFFFF
##283F87	1.00	9.76	2.15	9.76
#FFFFFF	9.76	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#12488A

Deuteranopia (green-blind)

#004086

Tritanopia (blue-blind)

#00505C

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #283f87;
/* rgb */ color: rgb(40, 63, 135);
/* oklch */ color: oklch(39.2% 0.124 267.2);

Tailwind

colors: {
  custom: {
    50: '#6e73aa',
    500: '#283f87',
    950: '#000000',
  },
}

SCSS

$custom: #283f87;
$custom-light: #6e73aa;
$custom-dark: #000000;

JSON

{
  "hex": "#283f87",
  "rgb": {
    "r": 40,
    "g": 63,
    "b": 135
  },
  "hsl": {
    "h": 225.474,
    "s": 54.286,
    "l": 34.314
  },
  "oklch": {
    "l": 0.39219,
    "c": 0.12373,
    "h": 267.2
  },
  "luminance": 0.05755
}

Semantic roles & 50–950 ramp

primary

#283F87

secondary

#B49D57

accent

#BA4ADE

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #283F87

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

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