#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
RGB	rgb(55, 51, 123)
HSL	hsl(243, 41%, 34%)
HSV	hsv(243, 59%, 48%)
CMYK	cmyk(55.3%, 58.5%, 0%, 51.8%)
CIE-LAB	lab(25.59, 23.43, -40.62)
CIE-LCH	lch(25.59, 46.89, 299.98°)
OKLab	oklab(36.81% 0.0233 -0.1163)
OKLCH	oklch(36.81% 0.119 281.3)
XYZ	xyz(6.3334, 4.6096, 19.2911)
Luminance	0.0461 (WCAG relative)
Temperature	cool
Family	blue

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
##37337B	1.00	10.93	1.92	10.93
#FFFFFF	10.93	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.93	1.00	21.00	1.00

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 →