#37289E#37289E

#37289E is a dark, vivid blue. Relative luminance 0.048; OKLCH L 38.2% C 0.180 H 279.4°. Best body text is #FFFFFF at 10.72:1 contrast (WCAG AA passes).

Color values

HEX	#37289E
RGB	rgb(55, 40, 158)
HSL	hsl(248, 60%, 39%)
HSV	hsv(248, 75%, 62%)
CMYK	cmyk(65.2%, 74.7%, 0%, 38%)
CIE-LAB	lab(26.15, 41.95, -61.42)
CIE-LCH	lch(26.15, 74.38, 304.33°)
OKLab	oklab(38.16% 0.0292 -0.1773)
OKLCH	oklch(38.16% 0.18 279.4)
XYZ	xyz(8.5039, 4.7978, 32.8190)
Luminance	0.0480 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37289E #8F9E28

analogous

#28549E #37289E #72289E

triadic

#37289E #9E3728 #289E37

tetradic

#37289E #9E2854 #8F9E28 #289E72

square

#37289E #9E2854 #8F9E28 #289E72

split-complementary

#37289E #9E7228 #549E28

monochromatic

#150F3C #261C6D #37289E #4A37CC #7668D9

Accessibility & contrast

On white

10.72

#37289E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#37289E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37289E

10.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37289E	#FFFFFF	#000000	##FFFFFF
##37289E	1.00	10.72	1.96	10.72
#FFFFFF	10.72	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042A1

Deuteranopia (green-blind)

#00399C

Tritanopia (blue-blind)

#004961

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #37289e;
/* rgb */ color: rgb(55, 40, 158);
/* oklch */ color: oklch(38.2% 0.180 279.4);

Tailwind

colors: {
  custom: {
    50: '#7c64bc',
    500: '#37289e',
    950: '#000000',
  },
}

SCSS

$custom: #37289e;
$custom-light: #7c64bc;
$custom-dark: #000000;

JSON

{
  "hex": "#37289e",
  "rgb": {
    "r": 55,
    "g": 40,
    "b": 158
  },
  "hsl": {
    "h": 247.627,
    "s": 59.596,
    "l": 38.824
  },
  "oklch": {
    "l": 0.38163,
    "c": 0.17969,
    "h": 279.4
  },
  "luminance": 0.04798
}

Semantic roles & 50–950 ramp

primary

#37289E

secondary

#B3BF63

accent

#E345CF

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0B0512

muted

#7C7A81

Preview Lab

Preview with #37289E

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

Preview Lab → · Contrast checker → · Palette generator →