#37429B#37429B

#37429B is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.3% C 0.144 H 273.3°. Best body text is #FFFFFF at 8.70:1 contrast (WCAG AA passes).

Color values

HEX	#37429B
RGB	rgb(55, 66, 155)
HSL	hsl(233, 48%, 41%)
HSV	hsv(233, 65%, 61%)
CMYK	cmyk(64.5%, 57.4%, 0%, 39.2%)
CIE-LAB	lab(31.98, 24.75, -50.08)
CIE-LCH	lch(31.98, 55.86, 296.30°)
OKLab	oklab(42.33% 0.0082 -0.1439)
OKLCH	oklch(42.33% 0.144 273.3)
XYZ	xyz(9.4382, 7.0744, 31.8721)
Luminance	0.0707 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37429B #9B9037

analogous

#37749B #37429B #5E379B

triadic

#37429B #9B3742 #429B37

tetradic

#37429B #9B3774 #9B9037 #379B5E

square

#37429B #9B3774 #9B9037 #379B5E

split-complementary

#37429B #9B5E37 #749B37

monochromatic

#171C41 #272F6E #37429B #4F5BC0 #7C85D0

Accessibility & contrast

On white

8.70

#37429B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#37429B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37429B

8.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37429B	#FFFFFF	#000000	##FFFFFF
##37429B	1.00	8.70	2.41	8.70
#FFFFFF	8.70	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00509E

Deuteranopia (green-blind)

#004799

Tritanopia (blue-blind)

#005768

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #37429b;
/* rgb */ color: rgb(55, 66, 155);
/* oklch */ color: oklch(42.3% 0.144 273.3);

Tailwind

colors: {
  custom: {
    50: '#7976b9',
    500: '#37429b',
    950: '#000000',
  },
}

SCSS

$custom: #37429b;
$custom-light: #7976b9;
$custom-dark: #000000;

JSON

{
  "hex": "#37429b",
  "rgb": {
    "r": 55,
    "g": 66,
    "b": 155
  },
  "hsl": {
    "h": 233.4,
    "s": 47.619,
    "l": 41.176
  },
  "oklch": {
    "l": 0.42325,
    "c": 0.14417,
    "h": 273.3
  },
  "luminance": 0.07075
}

Semantic roles & 50–950 ramp

primary

#37429B

secondary

#BAB274

accent

#C851D7

background

#F7F7FB

surface

#EEEDF6

border

#C9C8D0

text

#0A0811

muted

#7C7B80

Preview Lab

Preview with #37429B

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

Preview Lab → · Contrast checker → · Palette generator →