#283987#283987

#283987 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.9% C 0.132 H 269.7°. Best body text is #FFFFFF at 10.37:1 contrast (WCAG AA passes).

Color values

HEX	#283987
RGB	rgb(40, 57, 135)
HSL	hsl(229, 54%, 34%)
HSV	hsv(229, 70%, 53%)
CMYK	cmyk(70.4%, 57.8%, 0%, 47.1%)
CIE-LAB	lab(27.09, 20.91, -45.76)
CIE-LCH	lch(27.09, 50.31, 294.56°)
OKLab	oklab(37.94% -0.0006 -0.1317)
OKLCH	oklch(37.94% 0.132 269.7)
XYZ	xyz(6.7099, 5.1260, 23.5528)
Luminance	0.0513 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283987 #877628

analogous

#286987 #283987 #472887

triadic

#283987 #872839 #398728

tetradic

#283987 #872869 #877628 #288747

square

#283987 #872869 #877628 #288747

split-complementary

#283987 #874728 #698728

monochromatic

#0C1129 #1A2558 #283987 #364DB6 #5B70CE

Accessibility & contrast

On white

10.37

#283987 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#283987 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283987

10.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283987	#FFFFFF	#000000	##FFFFFF
##283987	1.00	10.37	2.03	10.37
#FFFFFF	10.37	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00448A

Deuteranopia (green-blind)

#003C85

Tritanopia (blue-blind)

#004C5A

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #283987;
/* rgb */ color: rgb(40, 57, 135);
/* oklch */ color: oklch(37.9% 0.132 269.7);

Tailwind

colors: {
  custom: {
    50: '#6f6fab',
    500: '#283987',
    950: '#000000',
  },
}

SCSS

$custom: #283987;
$custom-light: #6f6fab;
$custom-dark: #000000;

JSON

{
  "hex": "#283987",
  "rgb": {
    "r": 40,
    "g": 57,
    "b": 135
  },
  "hsl": {
    "h": 229.263,
    "s": 54.286,
    "l": 34.314
  },
  "oklch": {
    "l": 0.37943,
    "c": 0.13174,
    "h": 269.7
  },
  "luminance": 0.05127
}

Semantic roles & 50–950 ramp

primary

#283987

secondary

#B4A357

accent

#C34ADE

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #283987

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

Preview Lab → · Contrast checker → · Palette generator →