#2131A8#2131A8

#2131A8 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 39.2% C 0.188 H 268.9°. Best body text is #FFFFFF at 10.15:1 contrast (WCAG AA passes).

Color values

HEX	#2131A8
RGB	rgb(33, 49, 168)
HSL	hsl(233, 67%, 39%)
HSV	hsv(233, 80%, 66%)
CMYK	cmyk(80.4%, 70.8%, 0%, 34.1%)
CIE-LAB	lab(27.70, 37.76, -64.98)
CIE-LCH	lch(27.70, 75.16, 300.16°)
OKLab	oklab(39.21% -0.0036 -0.1882)
OKLCH	oklch(39.21% 0.188 268.9)
XYZ	xyz(8.7910, 5.3461, 37.6068)
Luminance	0.0535 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2131A8 #A89821

analogous

#2175A8 #2131A8 #5521A8

triadic

#2131A8 #A82131 #31A821

tetradic

#2131A8 #A82175 #A89821 #21A855

square

#2131A8 #A82175 #A89821 #21A855

split-complementary

#2131A8 #A85521 #75A821

monochromatic

#0D1342 #172275 #2131A8 #3044D6 #6372E0

Accessibility & contrast

On white

10.15

#2131A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#2131A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2131A8

10.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2131A8	#FFFFFF	#000000	##FFFFFF
##2131A8	1.00	10.15	2.07	10.15
#FFFFFF	10.15	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048AC

Deuteranopia (green-blind)

#003BA6

Tritanopia (blue-blind)

#005269

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #2131a8;
/* rgb */ color: rgb(33, 49, 168);
/* oklch */ color: oklch(39.2% 0.188 268.9);

Tailwind

colors: {
  custom: {
    50: '#7569c3',
    500: '#2131a8',
    950: '#000000',
  },
}

SCSS

$custom: #2131a8;
$custom-light: #7569c3;
$custom-dark: #000000;

JSON

{
  "hex": "#2131a8",
  "rgb": {
    "r": 33,
    "g": 49,
    "b": 168
  },
  "hsl": {
    "h": 232.889,
    "s": 67.164,
    "l": 39.412
  },
  "oklch": {
    "l": 0.39209,
    "c": 0.18826,
    "h": 268.9
  },
  "luminance": 0.05347
}

Semantic roles & 50–950 ramp

primary

#2131A8

secondary

#C5B95F

accent

#D63EEA

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0613

muted

#7C7A82

Preview Lab

Preview with #2131A8

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

Preview Lab → · Contrast checker → · Palette generator →