#2B37A7#2B37A7

#2B37A7 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.6% C 0.178 H 271.1°. Best body text is #FFFFFF at 9.51:1 contrast (WCAG AA passes).

Color values

HEX	#2B37A7
RGB	rgb(43, 55, 167)
HSL	hsl(234, 59%, 41%)
HSV	hsv(234, 74%, 65%)
CMYK	cmyk(74.3%, 67.1%, 0%, 34.5%)
CIE-LAB	lab(29.50, 34.57, -61.40)
CIE-LCH	lch(29.50, 70.46, 299.38°)
OKLab	oklab(40.62% 0.0033 -0.1776)
OKLCH	oklch(40.62% 0.178 271.1)
XYZ	xyz(9.3351, 6.0350, 37.2246)
Luminance	0.0604 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B37A7 #A79B2B

analogous

#2B75A7 #2B37A7 #5D2BA7

triadic

#2B37A7 #A72B37 #37A72B

tetradic

#2B37A7 #A72B75 #A79B2B #2BA75D

square

#2B37A7 #A72B75 #A79B2B #2BA75D

split-complementary

#2B37A7 #A75D2B #75A72B

monochromatic

#121746 #1E2776 #2B37A7 #414FCE #727CDB

Accessibility & contrast

On white

9.51

#2B37A7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#2B37A7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B37A7

9.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B37A7	#FFFFFF	#000000	##FFFFFF
##2B37A7	1.00	9.51	2.21	9.51
#FFFFFF	9.51	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BAA

Deuteranopia (green-blind)

#0040A5

Tritanopia (blue-blind)

#00556A

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #2b37a7;
/* rgb */ color: rgb(43, 55, 167);
/* oklch */ color: oklch(40.6% 0.178 271.1);

Tailwind

colors: {
  custom: {
    50: '#776ec2',
    500: '#2b37a7',
    950: '#000000',
  },
}

SCSS

$custom: #2b37a7;
$custom-light: #776ec2;
$custom-dark: #000000;

JSON

{
  "hex": "#2b37a7",
  "rgb": {
    "r": 43,
    "g": 55,
    "b": 167
  },
  "hsl": {
    "h": 234.194,
    "s": 59.048,
    "l": 41.176
  },
  "oklch": {
    "l": 0.40623,
    "c": 0.17758,
    "h": 271.1
  },
  "luminance": 0.06036
}

Semantic roles & 50–950 ramp

primary

#2B37A7

secondary

#C2BA6C

accent

#D346E2

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #2B37A7

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

Preview Lab → · Contrast checker → · Palette generator →