#2B3583#2B3583

#2B3583 is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.0% C 0.130 H 272.8°. Best body text is #FFFFFF at 10.83:1 contrast (WCAG AA passes).

Color values

HEX	#2B3583
RGB	rgb(43, 53, 131)
HSL	hsl(233, 51%, 34%)
HSV	hsv(233, 67%, 51%)
CMYK	cmyk(67.2%, 59.5%, 0%, 48.6%)
CIE-LAB	lab(25.86, 22.63, -45.26)
CIE-LCH	lch(25.86, 50.60, 296.56°)
OKLab	oklab(36.97% 0.0063 -0.1302)
OKLCH	oklch(36.97% 0.13 272.8)
XYZ	xyz(6.3647, 4.6979, 22.0397)
Luminance	0.0470 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3583 #83792B

analogous

#2B6183 #2B3583 #4D2B83

triadic

#2B3583 #832B35 #35832B

tetradic

#2B3583 #832B61 #83792B #2B834D

square

#2B3583 #832B61 #83792B #2B834D

split-complementary

#2B3583 #834D2B #61832B

monochromatic

#0D1027 #1C2255 #2B3583 #3A48B1 #5E6ACA

Accessibility & contrast

On white

10.83

#2B3583 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#2B3583 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3583

10.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3583	#FFFFFF	#000000	##FFFFFF
##2B3583	1.00	10.83	1.94	10.83
#FFFFFF	10.83	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004186

Deuteranopia (green-blind)

#003981

Tritanopia (blue-blind)

#004856

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #2b3583;
/* rgb */ color: rgb(43, 53, 131);
/* oklch */ color: oklch(37.0% 0.130 272.8);

Tailwind

colors: {
  custom: {
    50: '#6f6ca8',
    500: '#2b3583',
    950: '#000000',
  },
}

SCSS

$custom: #2b3583;
$custom-light: #6f6ca8;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3583",
  "rgb": {
    "r": 43,
    "g": 53,
    "b": 131
  },
  "hsl": {
    "h": 233.182,
    "s": 50.575,
    "l": 34.118
  },
  "oklch": {
    "l": 0.36969,
    "c": 0.1304,
    "h": 272.8
  },
  "luminance": 0.04698
}

Semantic roles & 50–950 ramp

primary

#2B3583

secondary

#B0A65A

accent

#CA4EDA

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #2B3583

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

Preview Lab → · Contrast checker → · Palette generator →