#2B37AB#2B37AB

#2B37AB is a dark, vivid blue. Relative luminance 0.062; OKLCH L 41.0% C 0.183 H 270.9°. Best body text is #FFFFFF at 9.39:1 contrast (WCAG AA passes).

Color values

HEX	#2B37AB
RGB	rgb(43, 55, 171)
HSL	hsl(234, 60%, 42%)
HSV	hsv(234, 75%, 67%)
CMYK	cmyk(74.9%, 67.8%, 0%, 32.9%)
CIE-LAB	lab(29.88, 36.01, -63.19)
CIE-LCH	lch(29.88, 72.73, 299.68°)
OKLab	oklab(41.01% 0.0029 -0.1828)
OKLCH	oklch(41.01% 0.183 270.9)
XYZ	xyz(9.7106, 6.1852, 39.2023)
Luminance	0.0619 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B37AB #AB9F2B

analogous

#2B77AB #2B37AB #5F2BAB

triadic

#2B37AB #AB2B37 #37AB2B

tetradic

#2B37AB #AB2B77 #AB9F2B #2BAB5F

square

#2B37AB #AB2B77 #AB9F2B #2BAB5F

split-complementary

#2B37AB #AB5F2B #77AB2B

monochromatic

#121849 #1F277A #2B37AB #4351D0 #747EDC

Accessibility & contrast

On white

9.39

#2B37AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#2B37AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B37AB

9.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B37AB	#FFFFFF	#000000	##FFFFFF
##2B37AB	1.00	9.39	2.24	9.39
#FFFFFF	9.39	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CAF

Deuteranopia (green-blind)

#0040A9

Tritanopia (blue-blind)

#00566C

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #2b37ab;
/* rgb */ color: rgb(43, 55, 171);
/* oklch */ color: oklch(41.0% 0.183 270.9);

Tailwind

colors: {
  custom: {
    50: '#786ec5',
    500: '#2b37ab',
    950: '#000000',
  },
}

SCSS

$custom: #2b37ab;
$custom-light: #786ec5;
$custom-dark: #000000;

JSON

{
  "hex": "#2b37ab",
  "rgb": {
    "r": 43,
    "g": 55,
    "b": 171
  },
  "hsl": {
    "h": 234.375,
    "s": 59.813,
    "l": 41.961
  },
  "oklch": {
    "l": 0.41009,
    "c": 0.1828,
    "h": 270.9
  },
  "luminance": 0.06186
}

Semantic roles & 50–950 ramp

primary

#2B37AB

secondary

#C4BC6E

accent

#D445E3

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #2B37AB

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

Preview Lab → · Contrast checker → · Palette generator →