#37479E#37479E

#37479E is a dark, vivid blue. Relative luminance 0.078; OKLCH L 43.6% C 0.142 H 271.4°. Best body text is #FFFFFF at 8.21:1 contrast (WCAG AA passes).

Color values

HEX	#37479E
RGB	rgb(55, 71, 158)
HSL	hsl(231, 48%, 42%)
HSV	hsv(231, 65%, 62%)
CMYK	cmyk(65.2%, 55.1%, 0%, 38%)
CIE-LAB	lab(33.53, 22.52, -49.37)
CIE-LCH	lch(33.53, 54.26, 294.52°)
OKLab	oklab(43.56% 0.0035 -0.1418)
OKLCH	oklch(43.56% 0.142 271.4)
XYZ	xyz(9.9983, 7.7864, 33.3172)
Luminance	0.0779 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37479E #9E8E37

analogous

#377B9E #37479E #5B379E

triadic

#37479E #9E3747 #479E37

tetradic

#37479E #9E377B #9E8E37 #379E5B

square

#37479E #9E377B #9E8E37 #379E5B

split-complementary

#37479E #9E5B37 #7B9E37

monochromatic

#171E43 #273371 #37479E #5062C2 #7D8BD2

Accessibility & contrast

On white

8.21

#37479E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#37479E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37479E

8.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37479E	#FFFFFF	#000000	##FFFFFF
##37479E	1.00	8.21	2.56	8.21
#FFFFFF	8.21	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0754A1

Deuteranopia (green-blind)

#004A9C

Tritanopia (blue-blind)

#005C6B

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #37479e;
/* rgb */ color: rgb(55, 71, 158);
/* oklch */ color: oklch(43.6% 0.142 271.4);

Tailwind

colors: {
  custom: {
    50: '#797abb',
    500: '#37479e',
    950: '#000000',
  },
}

SCSS

$custom: #37479e;
$custom-light: #797abb;
$custom-dark: #000000;

JSON

{
  "hex": "#37479e",
  "rgb": {
    "r": 55,
    "g": 71,
    "b": 158
  },
  "hsl": {
    "h": 230.68,
    "s": 48.357,
    "l": 41.765
  },
  "oklch": {
    "l": 0.43562,
    "c": 0.14184,
    "h": 271.4
  },
  "luminance": 0.07787
}

Semantic roles & 50–950 ramp

primary

#37479E

secondary

#BBB076

accent

#C350D8

background

#F7F7FB

surface

#EEEDF6

border

#C9C8D0

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #37479E

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

Preview Lab → · Contrast checker → · Palette generator →