#2837A9#2837A9

#2837A9 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.7% C 0.181 H 270.0°. Best body text is #FFFFFF at 9.50:1 contrast (WCAG AA passes).

Color values

HEX	#2837A9
RGB	rgb(40, 55, 169)
HSL	hsl(233, 62%, 41%)
HSV	hsv(233, 76%, 66%)
CMYK	cmyk(76.3%, 67.5%, 0%, 33.7%)
CIE-LAB	lab(29.53, 34.97, -62.56)
CIE-LCH	lch(29.53, 71.67, 299.21°)
OKLab	oklab(40.66% 0 -0.181)
OKLCH	oklch(40.66% 0.181 270)
XYZ	xyz(9.4002, 6.0470, 38.2002)
Luminance	0.0605 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2837A9 #A99A28

analogous

#2877A9 #2837A9 #5928A9

triadic

#2837A9 #A92837 #37A928

tetradic

#2837A9 #A92877 #A99A28 #28A959

square

#2837A9 #A92877 #A99A28 #28A959

split-complementary

#2837A9 #A95928 #77A928

monochromatic

#111746 #1C2778 #2837A9 #3D4ED1 #6F7BDD

Accessibility & contrast

On white

9.50

#2837A9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#2837A9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2837A9

9.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2837A9	#FFFFFF	#000000	##FFFFFF
##2837A9	1.00	9.50	2.21	9.50
#FFFFFF	9.50	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CAD

Deuteranopia (green-blind)

#003FA7

Tritanopia (blue-blind)

#00566B

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #2837a9;
/* rgb */ color: rgb(40, 55, 169);
/* oklch */ color: oklch(40.7% 0.181 270.0);

Tailwind

colors: {
  custom: {
    50: '#776ec4',
    500: '#2837a9',
    950: '#000000',
  },
}

SCSS

$custom: #2837a9;
$custom-light: #776ec4;
$custom-dark: #000000;

JSON

{
  "hex": "#2837a9",
  "rgb": {
    "r": 40,
    "g": 55,
    "b": 169
  },
  "hsl": {
    "h": 233.023,
    "s": 61.722,
    "l": 40.98
  },
  "oklch": {
    "l": 0.40659,
    "c": 0.18101,
    "h": 270
  },
  "luminance": 0.06048
}

Semantic roles & 50–950 ramp

primary

#2837A9

secondary

#C4B969

accent

#D243E5

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #2837A9

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

Preview Lab → · Contrast checker → · Palette generator →