#37488B#37488B

#37488B is a dark, moderate blue. Relative luminance 0.073; OKLCH L 42.4% C 0.113 H 270.3°. Best body text is #FFFFFF at 8.53:1 contrast (WCAG AA passes).

Color values

HEX	#37488B
RGB	rgb(55, 72, 139)
HSL	hsl(228, 43%, 38%)
HSV	hsv(228, 60%, 55%)
CMYK	cmyk(60.4%, 48.2%, 0%, 45.5%)
CIE-LAB	lab(32.50, 14.98, -39.46)
CIE-LCH	lch(32.50, 42.21, 290.79°)
OKLab	oklab(42.36% 0.0006 -0.1126)
OKLCH	oklch(42.36% 0.113 270.3)
XYZ	xyz(8.5516, 7.3104, 25.3815)
Luminance	0.0731 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37488B #8B7A37

analogous

#37728B #37488B #50378B

triadic

#37488B #8B3748 #488B37

tetradic

#37488B #8B3772 #8B7A37 #378B50

square

#37488B #8B3772 #8B7A37 #378B50

split-complementary

#37488B #8B5037 #728B37

monochromatic

#141B33 #26315F #37488B #485FB7 #7485C8

Accessibility & contrast

On white

8.53

#37488B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#37488B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37488B

8.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37488B	#FFFFFF	#000000	##FFFFFF
##37488B	1.00	8.53	2.46	8.53
#FFFFFF	8.53	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#28508D

Deuteranopia (green-blind)

#1B498A

Tritanopia (blue-blind)

#005762

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #37488b;
/* rgb */ color: rgb(55, 72, 139);
/* oklch */ color: oklch(42.4% 0.113 270.3);

Tailwind

colors: {
  custom: {
    50: '#767aad',
    500: '#37488b',
    950: '#000000',
  },
}

SCSS

$custom: #37488b;
$custom-light: #767aad;
$custom-dark: #000000;

JSON

{
  "hex": "#37488b",
  "rgb": {
    "r": 55,
    "g": 72,
    "b": 139
  },
  "hsl": {
    "h": 227.857,
    "s": 43.299,
    "l": 38.039
  },
  "oklch": {
    "l": 0.42364,
    "c": 0.11264,
    "h": 270.3
  },
  "luminance": 0.07311
}

Semantic roles & 50–950 ramp

primary

#37488B

secondary

#B1A36D

accent

#B955D3

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#090910

muted

#7B7B7F

Preview Lab

Preview with #37488B

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

Preview Lab → · Contrast checker → · Palette generator →