#2837A8#2837A8

#2837A8 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.6% C 0.180 H 270.0°. Best body text is #FFFFFF at 9.54:1 contrast (WCAG AA passes).

Color values

HEX	#2837A8
RGB	rgb(40, 55, 168)
HSL	hsl(233, 62%, 41%)
HSV	hsv(233, 76%, 66%)
CMYK	cmyk(76.2%, 67.3%, 0%, 34.1%)
CIE-LAB	lab(29.44, 34.61, -62.11)
CIE-LCH	lch(29.44, 71.10, 299.13°)
OKLab	oklab(40.56% 0.0001 -0.1797)
OKLCH	oklch(40.56% 0.18 270)
XYZ	xyz(9.3067, 6.0096, 37.7077)
Luminance	0.0601 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2837A8 #A89928

analogous

#2877A8 #2837A8 #5928A8

triadic

#2837A8 #A82837 #37A828

tetradic

#2837A8 #A82877 #A89928 #28A859

square

#2837A8 #A82877 #A89928 #28A859

split-complementary

#2837A8 #A85928 #77A828

monochromatic

#101745 #1C2777 #2837A8 #3D4ED1 #6E7BDC

Accessibility & contrast

On white

9.54

#2837A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#2837A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2837A8

9.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2837A8	#FFFFFF	#000000	##FFFFFF
##2837A8	1.00	9.54	2.20	9.54
#FFFFFF	9.54	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CAC

Deuteranopia (green-blind)

#003FA6

Tritanopia (blue-blind)

#00556A

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #2837a8;
/* rgb */ color: rgb(40, 55, 168);
/* oklch */ color: oklch(40.6% 0.180 270.0);

Tailwind

colors: {
  custom: {
    50: '#776ec3',
    500: '#2837a8',
    950: '#000000',
  },
}

SCSS

$custom: #2837a8;
$custom-light: #776ec3;
$custom-dark: #000000;

JSON

{
  "hex": "#2837a8",
  "rgb": {
    "r": 40,
    "g": 55,
    "b": 168
  },
  "hsl": {
    "h": 232.969,
    "s": 61.538,
    "l": 40.784
  },
  "oklch": {
    "l": 0.40562,
    "c": 0.1797,
    "h": 270
  },
  "luminance": 0.06011
}

Semantic roles & 50–950 ramp

primary

#2837A8

secondary

#C3B969

accent

#D243E5

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #2837A8

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

Preview Lab → · Contrast checker → · Palette generator →