#37409D#37409D

#37409D is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.1% C 0.150 H 273.9°. Best body text is #FFFFFF at 8.81:1 contrast (WCAG AA passes).

Color values

HEX	#37409D
RGB	rgb(55, 64, 157)
HSL	hsl(235, 48%, 42%)
HSV	hsv(235, 65%, 62%)
CMYK	cmyk(65%, 59.2%, 0%, 38.4%)
CIE-LAB	lab(31.61, 26.78, -51.89)
CIE-LCH	lch(31.61, 58.39, 297.30°)
OKLab	oklab(42.1% 0.0101 -0.1493)
OKLCH	oklch(42.1% 0.15 273.9)
XYZ	xyz(9.4927, 6.9125, 32.7258)
Luminance	0.0691 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37409D #9D9437

analogous

#37739D #37409D #61379D

triadic

#37409D #9D3740 #409D37

tetradic

#37409D #9D3773 #9D9437 #379D61

square

#37409D #9D3773 #9D9437 #379D61

split-complementary

#37409D #9D6137 #739D37

monochromatic

#171B42 #272E70 #37409D #505AC2 #7D84D1

Accessibility & contrast

On white

8.81

#37409D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#37409D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37409D

8.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37409D	#FFFFFF	#000000	##FFFFFF
##37409D	1.00	8.81	2.38	8.81
#FFFFFF	8.81	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA0

Deuteranopia (green-blind)

#00469B

Tritanopia (blue-blind)

#005768

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #37409d;
/* rgb */ color: rgb(55, 64, 157);
/* oklch */ color: oklch(42.1% 0.150 273.9);

Tailwind

colors: {
  custom: {
    50: '#7a74bb',
    500: '#37409d',
    950: '#000000',
  },
}

SCSS

$custom: #37409d;
$custom-light: #7a74bb;
$custom-dark: #000000;

JSON

{
  "hex": "#37409d",
  "rgb": {
    "r": 55,
    "g": 64,
    "b": 157
  },
  "hsl": {
    "h": 234.706,
    "s": 48.113,
    "l": 41.569
  },
  "oklch": {
    "l": 0.42099,
    "c": 0.14963,
    "h": 273.9
  },
  "luminance": 0.06913
}

Semantic roles & 50–950 ramp

primary

#37409D

secondary

#BBB475

accent

#CC50D8

background

#F7F7FB

surface

#EEEDF6

border

#C9C8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #37409D

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

Preview Lab → · Contrast checker → · Palette generator →