#2B37A8#2B37A8

#2B37A8 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.7% C 0.179 H 271.0°. Best body text is #FFFFFF at 9.48:1 contrast (WCAG AA passes).

Color values

HEX	#2B37A8
RGB	rgb(43, 55, 168)
HSL	hsl(234, 59%, 41%)
HSV	hsv(234, 74%, 66%)
CMYK	cmyk(74.4%, 67.3%, 0%, 34.1%)
CIE-LAB	lab(29.59, 34.93, -61.85)
CIE-LCH	lch(29.59, 71.03, 299.46°)
OKLab	oklab(40.72% 0.0032 -0.1789)
OKLCH	oklch(40.72% 0.179 271)
XYZ	xyz(9.4279, 6.0721, 37.7134)
Luminance	0.0607 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B37A8 #A89C2B

analogous

#2B76A8 #2B37A8 #5E2BA8

triadic

#2B37A8 #A82B37 #37A82B

tetradic

#2B37A8 #A82B76 #A89C2B #2BA85E

square

#2B37A8 #A82B76 #A89C2B #2BA85E

split-complementary

#2B37A8 #A85E2B #76A82B

monochromatic

#121747 #1F2777 #2B37A8 #424FCF #727CDB

Accessibility & contrast

On white

9.48

#2B37A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#2B37A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B37A8

9.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B37A8	#FFFFFF	#000000	##FFFFFF
##2B37A8	1.00	9.48	2.21	9.48
#FFFFFF	9.48	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CAC

Deuteranopia (green-blind)

#0040A6

Tritanopia (blue-blind)

#00556A

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #2b37a8;
/* rgb */ color: rgb(43, 55, 168);
/* oklch */ color: oklch(40.7% 0.179 271.0);

Tailwind

colors: {
  custom: {
    50: '#786ec3',
    500: '#2b37a8',
    950: '#000000',
  },
}

SCSS

$custom: #2b37a8;
$custom-light: #786ec3;
$custom-dark: #000000;

JSON

{
  "hex": "#2b37a8",
  "rgb": {
    "r": 43,
    "g": 55,
    "b": 168
  },
  "hsl": {
    "h": 234.24,
    "s": 59.242,
    "l": 41.373
  },
  "oklch": {
    "l": 0.40719,
    "c": 0.17889,
    "h": 271
  },
  "luminance": 0.06073
}

Semantic roles & 50–950 ramp

primary

#2B37A8

secondary

#C2BA6C

accent

#D345E2

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #2B37A8

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

Preview Lab → · Contrast checker → · Palette generator →