#283587#283587

#283587 is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.1% C 0.137 H 271.2°. Best body text is #FFFFFF at 10.77:1 contrast (WCAG AA passes).

Color values

HEX	#283587
RGB	rgb(40, 53, 135)
HSL	hsl(232, 54%, 34%)
HSV	hsv(232, 70%, 53%)
CMYK	cmyk(70.4%, 60.7%, 0%, 47.1%)
CIE-LAB	lab(26.00, 23.65, -47.54)
CIE-LCH	lch(26.00, 53.10, 296.45°)
OKLab	oklab(37.13% 0.0029 -0.137)
OKLCH	oklch(37.13% 0.137 271.2)
XYZ	xyz(6.5199, 4.7460, 23.4894)
Luminance	0.0475 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283587 #877A28

analogous

#286587 #283587 #4A2887

triadic

#283587 #872835 #358728

tetradic

#283587 #872865 #877A28 #28874A

square

#283587 #872865 #877A28 #28874A

split-complementary

#283587 #874A28 #658728

monochromatic

#0C1029 #1A2258 #283587 #3648B6 #5B6BCE

Accessibility & contrast

On white

10.77

#283587 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#283587 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283587

10.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283587	#FFFFFF	#000000	##FFFFFF
##283587	1.00	10.77	1.95	10.77
#FFFFFF	10.77	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00428A

Deuteranopia (green-blind)

#003985

Tritanopia (blue-blind)

#004958

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #283587;
/* rgb */ color: rgb(40, 53, 135);
/* oklch */ color: oklch(37.1% 0.137 271.2);

Tailwind

colors: {
  custom: {
    50: '#6f6cab',
    500: '#283587',
    950: '#000000',
  },
}

SCSS

$custom: #283587;
$custom-light: #6f6cab;
$custom-dark: #000000;

JSON

{
  "hex": "#283587",
  "rgb": {
    "r": 40,
    "g": 53,
    "b": 135
  },
  "hsl": {
    "h": 231.789,
    "s": 54.286,
    "l": 34.314
  },
  "oklch": {
    "l": 0.37128,
    "c": 0.13704,
    "h": 271.2
  },
  "luminance": 0.04747
}

Semantic roles & 50–950 ramp

primary

#283587

secondary

#B4A757

accent

#C94ADE

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #283587

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

Preview Lab → · Contrast checker → · Palette generator →