#37398D#37398D

#37398D is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.4% C 0.136 H 277.1°. Best body text is #FFFFFF at 9.85:1 contrast (WCAG AA passes).

Color values

HEX	#37398D
RGB	rgb(55, 57, 141)
HSL	hsl(239, 44%, 38%)
HSV	hsv(239, 61%, 55%)
CMYK	cmyk(61%, 59.6%, 0%, 44.7%)
CIE-LAB	lab(28.54, 25.71, -47.08)
CIE-LCH	lch(28.54, 53.65, 298.64°)
OKLab	oklab(39.43% 0.0169 -0.1352)
OKLCH	oklch(39.43% 0.136 277.1)
XYZ	xyz(7.8448, 5.6610, 25.8734)
Luminance	0.0566 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37398D #8D8B37

analogous

#37648D #37398D #60378D

triadic

#37398D #8D3739 #398D37

tetradic

#37398D #8D3764 #8D8B37 #378D60

square

#37398D #8D3764 #8D8B37 #378D60

split-complementary

#37398D #8D6037 #648D37

monochromatic

#151535 #262761 #37398D #494CB8 #7577C9

Accessibility & contrast

On white

9.85

#37398D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#37398D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37398D

9.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37398D	#FFFFFF	#000000	##FFFFFF
##37398D	1.00	9.85	2.13	9.85
#FFFFFF	9.85	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004790

Deuteranopia (green-blind)

#00408B

Tritanopia (blue-blind)

#004D5D

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #37398d;
/* rgb */ color: rgb(55, 57, 141);
/* oklch */ color: oklch(39.4% 0.136 277.1);

Tailwind

colors: {
  custom: {
    50: '#776faf',
    500: '#37398d',
    950: '#000000',
  },
}

SCSS

$custom: #37398d;
$custom-light: #776faf;
$custom-dark: #000000;

JSON

{
  "hex": "#37398d",
  "rgb": {
    "r": 55,
    "g": 57,
    "b": 141
  },
  "hsl": {
    "h": 238.605,
    "s": 43.878,
    "l": 38.431
  },
  "oklch": {
    "l": 0.39429,
    "c": 0.13628,
    "h": 277.1
  },
  "luminance": 0.05662
}

Semantic roles & 50–950 ramp

primary

#37398D

secondary

#B2B06E

accent

#D154D4

background

#F7F6FA

surface

#EEECF5

border

#C9C7CF

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #37398D

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

Preview Lab → · Contrast checker → · Palette generator →