#2B37A9#2B37A9

#2B37A9 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.8% C 0.180 H 271.0°. Best body text is #FFFFFF at 9.45:1 contrast (WCAG AA passes).

Color values

HEX	#2B37A9
RGB	rgb(43, 55, 169)
HSL	hsl(234, 59%, 42%)
HSV	hsv(234, 75%, 66%)
CMYK	cmyk(74.6%, 67.5%, 0%, 33.7%)
CIE-LAB	lab(29.69, 35.29, -62.29)
CIE-LCH	lch(29.69, 71.60, 299.53°)
OKLab	oklab(40.82% 0.0031 -0.1802)
OKLCH	oklch(40.82% 0.18 271)
XYZ	xyz(9.5214, 6.1095, 38.2059)
Luminance	0.0611 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B37A9 #A99D2B

analogous

#2B76A9 #2B37A9 #5E2BA9

triadic

#2B37A9 #A92B37 #37A92B

tetradic

#2B37A9 #A92B76 #A99D2B #2BA95E

square

#2B37A9 #A92B76 #A99D2B #2BA95E

split-complementary

#2B37A9 #A95E2B #76A92B

monochromatic

#121747 #1F2778 #2B37A9 #4250CF #737DDB

Accessibility & contrast

On white

9.45

#2B37A9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#2B37A9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B37A9

9.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B37A9	#FFFFFF	#000000	##FFFFFF
##2B37A9	1.00	9.45	2.22	9.45
#FFFFFF	9.45	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CAD

Deuteranopia (green-blind)

#0040A7

Tritanopia (blue-blind)

#00566B

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #2b37a9;
/* rgb */ color: rgb(43, 55, 169);
/* oklch */ color: oklch(40.8% 0.180 271.0);

Tailwind

colors: {
  custom: {
    50: '#786ec4',
    500: '#2b37a9',
    950: '#000000',
  },
}

SCSS

$custom: #2b37a9;
$custom-light: #786ec4;
$custom-dark: #000000;

JSON

{
  "hex": "#2b37a9",
  "rgb": {
    "r": 43,
    "g": 55,
    "b": 169
  },
  "hsl": {
    "h": 234.286,
    "s": 59.434,
    "l": 41.569
  },
  "oklch": {
    "l": 0.40815,
    "c": 0.1802,
    "h": 271
  },
  "luminance": 0.06111
}

Semantic roles & 50–950 ramp

primary

#2B37A9

secondary

#C3BB6D

accent

#D445E3

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #2B37A9

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

Preview Lab → · Contrast checker → · Palette generator →