#2837AB#2837AB

#2837AB is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.9% C 0.184 H 270.0°. Best body text is #FFFFFF at 9.44:1 contrast (WCAG AA passes).

Color values

HEX	#2837AB
RGB	rgb(40, 55, 171)
HSL	hsl(233, 62%, 41%)
HSV	hsv(233, 77%, 67%)
CMYK	cmyk(76.6%, 67.8%, 0%, 32.9%)
CIE-LAB	lab(29.72, 35.70, -63.45)
CIE-LCH	lch(29.72, 72.80, 299.36°)
OKLab	oklab(40.85% -0.0001 -0.1836)
OKLCH	oklch(40.85% 0.184 270)
XYZ	xyz(9.5894, 6.1227, 39.1966)
Luminance	0.0612 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.78

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2837AB #AB9C28

analogous

#2879AB #2837AB #5B28AB

triadic

#2837AB #AB2837 #37AB28

tetradic

#2837AB #AB2879 #AB9C28 #28AB5B

square

#2837AB #AB2879 #AB9C28 #28AB5B

split-complementary

#2837AB #AB5B28 #79AB28

monochromatic

#111748 #1C2779 #2837AB #3E4FD2 #707CDE

Accessibility & contrast

On white

9.44

#2837AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#2837AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2837AB

9.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2837AB	#FFFFFF	#000000	##FFFFFF
##2837AB	1.00	9.44	2.22	9.44
#FFFFFF	9.44	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.44	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: #2837ab;
/* rgb */ color: rgb(40, 55, 171);
/* oklch */ color: oklch(40.9% 0.184 270.0);

Tailwind

colors: {
  custom: {
    50: '#776ec5',
    500: '#2837ab',
    950: '#000000',
  },
}

SCSS

$custom: #2837ab;
$custom-light: #776ec5;
$custom-dark: #000000;

JSON

{
  "hex": "#2837ab",
  "rgb": {
    "r": 40,
    "g": 55,
    "b": 171
  },
  "hsl": {
    "h": 233.13,
    "s": 62.085,
    "l": 41.373
  },
  "oklch": {
    "l": 0.40854,
    "c": 0.18361,
    "h": 270
  },
  "luminance": 0.06124
}

Semantic roles & 50–950 ramp

primary

#2837AB

secondary

#C4BA6A

accent

#D343E5

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #2837AB

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

Preview Lab → · Contrast checker → · Palette generator →