#37378F#37378F

#37378F is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.2% C 0.142 H 277.6°. Best body text is #FFFFFF at 9.97:1 contrast (WCAG AA passes).

Color values

HEX	#37378F
RGB	rgb(55, 55, 143)
HSL	hsl(240, 44%, 39%)
HSV	hsv(240, 62%, 56%)
CMYK	cmyk(61.5%, 61.5%, 0%, 43.9%)
CIE-LAB	lab(28.19, 27.73, -48.89)
CIE-LCH	lch(28.19, 56.21, 299.56°)
OKLab	oklab(39.22% 0.0188 -0.1406)
OKLCH	oklch(39.22% 0.142 277.6)
XYZ	xyz(7.8981, 5.5272, 26.6319)
Luminance	0.0553 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37378F #8F8F37

analogous

#37638F #37378F #63378F

triadic

#37378F #8F3737 #378F37

tetradic

#37378F #8F3763 #8F8F37 #378F63

square

#37378F #8F3763 #8F8F37 #378F63

split-complementary

#37378F #8F6337 #638F37

monochromatic

#151537 #262663 #37378F #4A4AB9 #7676CA

Accessibility & contrast

On white

9.97

#37378F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#37378F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37378F

9.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37378F	#FFFFFF	#000000	##FFFFFF
##37378F	1.00	9.97	2.11	9.97
#FFFFFF	9.97	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004692

Deuteranopia (green-blind)

#003F8D

Tritanopia (blue-blind)

#004C5D

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #37378f;
/* rgb */ color: rgb(55, 55, 143);
/* oklch */ color: oklch(39.2% 0.142 277.6);

Tailwind

colors: {
  custom: {
    50: '#776eb0',
    500: '#37378f',
    950: '#000000',
  },
}

SCSS

$custom: #37378f;
$custom-light: #776eb0;
$custom-dark: #000000;

JSON

{
  "hex": "#37378f",
  "rgb": {
    "r": 55,
    "g": 55,
    "b": 143
  },
  "hsl": {
    "h": 240,
    "s": 44.444,
    "l": 38.824
  },
  "oklch": {
    "l": 0.39218,
    "c": 0.14182,
    "h": 277.6
  },
  "luminance": 0.05528
}

Semantic roles & 50–950 ramp

primary

#37378F

secondary

#B3B36F

accent

#D454D4

background

#F7F6FA

surface

#EEEBF5

border

#C9C6CF

text

#0A0711

muted

#7C7A80

Preview Lab

Preview with #37378F

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

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