#2131A4#2131A4

#2131A4 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.8% C 0.183 H 269.0°. Best body text is #FFFFFF at 10.29:1 contrast (WCAG AA passes).

Color values

HEX	#2131A4
RGB	rgb(33, 49, 164)
HSL	hsl(233, 66%, 39%)
HSV	hsv(233, 80%, 64%)
CMYK	cmyk(79.9%, 70.1%, 0%, 35.7%)
CIE-LAB	lab(27.30, 36.31, -63.23)
CIE-LCH	lch(27.30, 72.92, 299.87°)
OKLab	oklab(38.8% -0.0032 -0.1831)
OKLCH	oklch(38.8% 0.183 269)
XYZ	xyz(8.4240, 5.1993, 35.6744)
Luminance	0.0520 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2131A4 #A49421

analogous

#2172A4 #2131A4 #5221A4

triadic

#2131A4 #A42131 #31A421

tetradic

#2131A4 #A42172 #A49421 #21A452

square

#2131A4 #A42172 #A49421 #21A452

split-complementary

#2131A4 #A45221 #72A421

monochromatic

#0C133E #172271 #2131A4 #2D42D5 #6070DF

Accessibility & contrast

On white

10.29

#2131A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#2131A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2131A4

10.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2131A4	#FFFFFF	#000000	##FFFFFF
##2131A4	1.00	10.29	2.04	10.29
#FFFFFF	10.29	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047A8

Deuteranopia (green-blind)

#003AA2

Tritanopia (blue-blind)

#005166

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #2131a4;
/* rgb */ color: rgb(33, 49, 164);
/* oklch */ color: oklch(38.8% 0.183 269.0);

Tailwind

colors: {
  custom: {
    50: '#7469c0',
    500: '#2131a4',
    950: '#000000',
  },
}

SCSS

$custom: #2131a4;
$custom-light: #7469c0;
$custom-dark: #000000;

JSON

{
  "hex": "#2131a4",
  "rgb": {
    "r": 33,
    "g": 49,
    "b": 164
  },
  "hsl": {
    "h": 232.672,
    "s": 66.497,
    "l": 38.627
  },
  "oklch": {
    "l": 0.38796,
    "c": 0.18316,
    "h": 269
  },
  "luminance": 0.052
}

Semantic roles & 50–950 ramp

primary

#2131A4

secondary

#C4B75D

accent

#D53EE9

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #2131A4

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

Preview Lab → · Contrast checker → · Palette generator →