#2837AF#2837AF

#2837AF is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.2% C 0.189 H 269.8°. Best body text is #FFFFFF at 9.31:1 contrast (WCAG AA passes).

Color values

HEX	#2837AF
RGB	rgb(40, 55, 175)
HSL	hsl(233, 63%, 42%)
HSV	hsv(233, 77%, 69%)
CMYK	cmyk(77.1%, 68.6%, 0%, 31.4%)
CIE-LAB	lab(30.10, 37.14, -65.21)
CIE-LCH	lch(30.10, 75.05, 299.66°)
OKLab	oklab(41.25% -0.0005 -0.1888)
OKLCH	oklch(41.25% 0.189 269.8)
XYZ	xyz(9.9765, 6.2775, 41.2350)
Luminance	0.0628 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2837AF #AFA028

analogous

#287BAF #2837AF #5C28AF

triadic

#2837AF #AF2837 #37AF28

tetradic

#2837AF #AF287B #AFA028 #28AF5C

square

#2837AF #AF287B #AFA028 #28AF5C

split-complementary

#2837AF #AF5C28 #7BAF28

monochromatic

#11184B #1D277D #2837AF #4151D4 #737FDF

Accessibility & contrast

On white

9.31

#2837AF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#2837AF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2837AF

9.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2837AF	#FFFFFF	#000000	##FFFFFF
##2837AF	1.00	9.31	2.26	9.31
#FFFFFF	9.31	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DB3

Deuteranopia (green-blind)

#0040AD

Tritanopia (blue-blind)

#00586E

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #2837af;
/* rgb */ color: rgb(40, 55, 175);
/* oklch */ color: oklch(41.2% 0.189 269.8);

Tailwind

colors: {
  custom: {
    50: '#786ec8',
    500: '#2837af',
    950: '#000000',
  },
}

SCSS

$custom: #2837af;
$custom-light: #786ec8;
$custom-dark: #000000;

JSON

{
  "hex": "#2837af",
  "rgb": {
    "r": 40,
    "g": 55,
    "b": 175
  },
  "hsl": {
    "h": 233.333,
    "s": 62.791,
    "l": 42.157
  },
  "oklch": {
    "l": 0.41248,
    "c": 0.18876,
    "h": 269.8
  },
  "luminance": 0.06279
}

Semantic roles & 50–950 ramp

primary

#2837AF

secondary

#C6BC6D

accent

#D442E6

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #2837AF

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

Preview Lab → · Contrast checker → · Palette generator →