#37289C#37289C

#37289C is a dark, vivid blue. Relative luminance 0.047; OKLCH L 38.0% C 0.177 H 279.6°. Best body text is #FFFFFF at 10.79:1 contrast (WCAG AA passes).

Color values

HEX	#37289C
RGB	rgb(55, 40, 156)
HSL	hsl(248, 59%, 38%)
HSV	hsv(248, 74%, 61%)
CMYK	cmyk(64.7%, 74.4%, 0%, 38.8%)
CIE-LAB	lab(25.95, 41.31, -60.53)
CIE-LCH	lch(25.95, 73.28, 304.31°)
OKLab	oklab(37.96% 0.0297 -0.1747)
OKLCH	oklch(37.96% 0.177 279.6)
XYZ	xyz(8.3332, 4.7295, 31.9198)
Luminance	0.0473 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37289C #8D9C28

analogous

#28539C #37289C #71289C

triadic

#37289C #9C3728 #289C37

tetradic

#37289C #9C2853 #8D9C28 #289C71

square

#37289C #9C2853 #8D9C28 #289C71

split-complementary

#37289C #9C7128 #539C28

monochromatic

#150F3B #261C6B #37289C #4936CB #7567D8

Accessibility & contrast

On white

10.79

#37289C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#37289C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37289C

10.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37289C	#FFFFFF	#000000	##FFFFFF
##37289C	1.00	10.79	1.95	10.79
#FFFFFF	10.79	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00429F

Deuteranopia (green-blind)

#00399A

Tritanopia (blue-blind)

#004960

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #37289c;
/* rgb */ color: rgb(55, 40, 156);
/* oklch */ color: oklch(38.0% 0.177 279.6);

Tailwind

colors: {
  custom: {
    50: '#7b64ba',
    500: '#37289c',
    950: '#000000',
  },
}

SCSS

$custom: #37289c;
$custom-light: #7b64ba;
$custom-dark: #000000;

JSON

{
  "hex": "#37289c",
  "rgb": {
    "r": 55,
    "g": 40,
    "b": 156
  },
  "hsl": {
    "h": 247.759,
    "s": 59.184,
    "l": 38.431
  },
  "oklch": {
    "l": 0.3796,
    "c": 0.1772,
    "h": 279.6
  },
  "luminance": 0.0473
}

Semantic roles & 50–950 ramp

primary

#37289C

secondary

#B2BE62

accent

#E245CE

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0B0512

muted

#7C7A81

Preview Lab

Preview with #37289C

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

Preview Lab → · Contrast checker → · Palette generator →