#283F86#283F86

#283F86 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.1% C 0.122 H 267.1°. Best body text is #FFFFFF at 9.79:1 contrast (WCAG AA passes).

Color values

HEX	#283F86
RGB	rgb(40, 63, 134)
HSL	hsl(225, 54%, 34%)
HSV	hsv(225, 70%, 53%)
CMYK	cmyk(70.1%, 53%, 0%, 47.5%)
CIE-LAB	lab(28.71, 16.40, -42.52)
CIE-LCH	lch(28.71, 45.57, 291.09°)
OKLab	oklab(39.14% -0.0062 -0.1221)
OKLCH	oklch(39.14% 0.122 267.1)
XYZ	xyz(6.9542, 5.7267, 23.2885)
Luminance	0.0573 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283F86 #866F28

analogous

#286E86 #283F86 #402886

triadic

#283F86 #86283F #3F8628

tetradic

#283F86 #86286E #866F28 #288640

square

#283F86 #86286E #866F28 #288640

split-complementary

#283F86 #864028 #6E8628

monochromatic

#0C1328 #1A2957 #283F86 #3655B5 #5B77CE

Accessibility & contrast

On white

9.79

#283F86 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#283F86 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283F86

9.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283F86	#FFFFFF	#000000	##FFFFFF
##283F86	1.00	9.79	2.15	9.79
#FFFFFF	9.79	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#134889

Deuteranopia (green-blind)

#004085

Tritanopia (blue-blind)

#00505C

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #283f86;
/* rgb */ color: rgb(40, 63, 134);
/* oklch */ color: oklch(39.1% 0.122 267.1);

Tailwind

colors: {
  custom: {
    50: '#6e73aa',
    500: '#283f86',
    950: '#000000',
  },
}

SCSS

$custom: #283f86;
$custom-light: #6e73aa;
$custom-dark: #000000;

JSON

{
  "hex": "#283f86",
  "rgb": {
    "r": 40,
    "g": 63,
    "b": 134
  },
  "hsl": {
    "h": 225.319,
    "s": 54.023,
    "l": 34.118
  },
  "oklch": {
    "l": 0.39141,
    "c": 0.12226,
    "h": 267.1
  },
  "luminance": 0.05727
}

Semantic roles & 50–950 ramp

primary

#283F86

secondary

#B39C57

accent

#B94ADD

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #283F86

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

Preview Lab → · Contrast checker → · Palette generator →