#37478D#37478D

#37478D is a dark, moderate blue. Relative luminance 0.072; OKLCH L 42.3% C 0.117 H 271.0°. Best body text is #FFFFFF at 8.58:1 contrast (WCAG AA passes).

Color values

HEX	#37478D
RGB	rgb(55, 71, 141)
HSL	hsl(229, 44%, 38%)
HSV	hsv(229, 61%, 55%)
CMYK	cmyk(61%, 49.6%, 0%, 44.7%)
CIE-LAB	lab(32.35, 16.37, -40.94)
CIE-LCH	lch(32.35, 44.09, 291.80°)
OKLab	oklab(42.29% 0.002 -0.117)
OKLCH	oklch(42.29% 0.117 271)
XYZ	xyz(8.6349, 7.2411, 26.1368)
Luminance	0.0724 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37478D #8D7D37

analogous

#37728D #37478D #52378D

triadic

#37478D #8D3747 #478D37

tetradic

#37478D #8D3772 #8D7D37 #378D52

square

#37478D #8D3772 #8D7D37 #378D52

split-complementary

#37478D #8D5237 #728D37

monochromatic

#151B35 #263161 #37478D #495EB8 #7585C9

Accessibility & contrast

On white

8.58

#37478D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#37478D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37478D

8.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37478D	#FFFFFF	#000000	##FFFFFF
##37478D	1.00	8.58	2.45	8.58
#FFFFFF	8.58	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#245090

Deuteranopia (green-blind)

#15488C

Tritanopia (blue-blind)

#005763

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #37478d;
/* rgb */ color: rgb(55, 71, 141);
/* oklch */ color: oklch(42.3% 0.117 271.0);

Tailwind

colors: {
  custom: {
    50: '#7679af',
    500: '#37478d',
    950: '#000000',
  },
}

SCSS

$custom: #37478d;
$custom-light: #7679af;
$custom-dark: #000000;

JSON

{
  "hex": "#37478d",
  "rgb": {
    "r": 55,
    "g": 71,
    "b": 141
  },
  "hsl": {
    "h": 228.837,
    "s": 43.878,
    "l": 38.431
  },
  "oklch": {
    "l": 0.42289,
    "c": 0.11701,
    "h": 271
  },
  "luminance": 0.07242
}

Semantic roles & 50–950 ramp

primary

#37478D

secondary

#B2A56E

accent

#BC54D4

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#090910

muted

#7B7B7F

Preview Lab

Preview with #37478D

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

Preview Lab → · Contrast checker → · Palette generator →