#283487#283487

#283487 is a dark, vivid blue. Relative luminance 0.047; OKLCH L 36.9% C 0.138 H 271.6°. Best body text is #FFFFFF at 10.87:1 contrast (WCAG AA passes).

Color values

HEX	#283487
RGB	rgb(40, 52, 135)
HSL	hsl(232, 54%, 34%)
HSV	hsv(232, 70%, 53%)
CMYK	cmyk(70.4%, 61.5%, 0%, 47.1%)
CIE-LAB	lab(25.73, 24.33, -47.98)
CIE-LCH	lch(25.73, 53.79, 296.89°)
OKLab	oklab(36.93% 0.0038 -0.1383)
OKLCH	oklch(36.93% 0.138 271.6)
XYZ	xyz(6.4748, 4.6558, 23.4744)
Luminance	0.0466 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283487 #877B28

analogous

#286487 #283487 #4C2887

triadic

#283487 #872834 #348728

tetradic

#283487 #872864 #877B28 #28874C

square

#283487 #872864 #877B28 #28874C

split-complementary

#283487 #874C28 #648728

monochromatic

#0C1029 #1A2258 #283487 #3646B6 #5B6ACE

Accessibility & contrast

On white

10.87

#283487 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#283487 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283487

10.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283487	#FFFFFF	#000000	##FFFFFF
##283487	1.00	10.87	1.93	10.87
#FFFFFF	10.87	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00418A

Deuteranopia (green-blind)

#003985

Tritanopia (blue-blind)

#004958

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #283487;
/* rgb */ color: rgb(40, 52, 135);
/* oklch */ color: oklch(36.9% 0.138 271.6);

Tailwind

colors: {
  custom: {
    50: '#6f6bab',
    500: '#283487',
    950: '#000000',
  },
}

SCSS

$custom: #283487;
$custom-light: #6f6bab;
$custom-dark: #000000;

JSON

{
  "hex": "#283487",
  "rgb": {
    "r": 40,
    "g": 52,
    "b": 135
  },
  "hsl": {
    "h": 232.421,
    "s": 54.286,
    "l": 34.314
  },
  "oklch": {
    "l": 0.36929,
    "c": 0.13835,
    "h": 271.6
  },
  "luminance": 0.04656
}

Semantic roles & 50–950 ramp

primary

#283487

secondary

#B4A857

accent

#CB4ADE

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #283487

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

Preview Lab → · Contrast checker → · Palette generator →