#37337B#37337B

#37337B is a dark, moderate blue. Relative luminance 0.046; OKLCH L 36.8% C 0.119 H 281.3°. Best body text is #FFFFFF at 10.93:1 contrast (WCAG AA passes).

Color values

HEX#37337B
RGBrgb(55, 51, 123)
HSLhsl(243, 41%, 34%)
HSVhsv(243, 59%, 48%)
CMYKcmyk(55.3%, 58.5%, 0%, 51.8%)
CIE-LABlab(25.59, 23.43, -40.62)
CIE-LCHlch(25.59, 46.89, 299.98°)
OKLaboklab(36.81% 0.0233 -0.1163)
OKLCHoklch(36.81% 0.119 281.3)
XYZxyz(6.3334, 4.6096, 19.2911)
Luminance0.0461 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#37337B #777B33
analogous
#33537B #37337B #5B337B
triadic
#37337B #7B3733 #337B37
tetradic
#37337B #7B3353 #777B33 #337B5B
square
#37337B #7B3353 #777B33 #337B5B
split-complementary
#37337B #7B5B33 #537B33
monochromatic
#100F24 #242150 #37337B #4A45A6 #6D68C0

Accessibility & contrast

On white

10.93
#37337B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.92
#37337B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37337B
10.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##37337B#FFFFFF#000000##FFFFFF
##37337B1.0010.931.9210.93
#FFFFFF10.931.0021.001.00
#0000001.9221.001.0021.00
##FFFFFF10.931.0021.001.00

Color blindness preview

Protanopia (red-blind)
#003F7D
Deuteranopia (green-blind)
#003A79
Tritanopia (blue-blind)
#194451
Achromatopsia (no color)
#3D3D3D

Design tokens & code

CSS
--color: #37337b;
/* rgb */ color: rgb(55, 51, 123);
/* oklch */ color: oklch(36.8% 0.119 281.3);
Tailwind
colors: {
  custom: {
    50: '#746ba2',
    500: '#37337b',
    950: '#000000',
  },
}
SCSS
$custom: #37337b;
$custom-light: #746ba2;
$custom-dark: #000000;
JSON
{
  "hex": "#37337b",
  "rgb": {
    "r": 55,
    "g": 51,
    "b": 123
  },
  "hsl": {
    "h": 243.333,
    "s": 41.379,
    "l": 34.118
  },
  "oklch": {
    "l": 0.36806,
    "c": 0.11858,
    "h": 281.3
  },
  "luminance": 0.0461
}

Semantic roles & 50–950 ramp

primary
#37337B
secondary
#A4A862
accent
#D157CA
background
#F7F6FA
surface
#EDEBF3
border
#C8C6CD
text
#09060F
muted
#7B7A7F

Preview Lab

Preview with #37337B

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

Preview Lab → · Contrast checker → · Palette generator →

#37337B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva