#373F7D#373F7D

#373F7D is a dark, moderate blue. Relative luminance 0.058; OKLCH L 39.4% C 0.104 H 275.1°. Best body text is #FFFFFF at 9.68:1 contrast (WCAG AA passes).

Color values

HEX	#373F7D
RGB	rgb(55, 63, 125)
HSL	hsl(233, 39%, 35%)
HSV	hsv(233, 56%, 49%)
CMYK	cmyk(56%, 49.6%, 0%, 51%)
CIE-LAB	lab(29.02, 16.05, -36.35)
CIE-LCH	lch(29.02, 39.74, 293.82°)
OKLab	oklab(39.43% 0.0092 -0.1036)
OKLCH	oklch(39.43% 0.104 275.1)
XYZ	xyz(7.0535, 5.8474, 20.1550)
Luminance	0.0585 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373F7D #7D7537

analogous

#37627D #373F7D #52377D

triadic

#373F7D #7D373F #3F7D37

tetradic

#373F7D #7D3762 #7D7537 #377D52

square

#373F7D #7D3762 #7D7537 #377D52

split-complementary

#373F7D #7D5237 #627D37

monochromatic

#121428 #242A52 #373F7D #4A54A7 #6F78C0

Accessibility & contrast

On white

9.68

#373F7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#373F7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373F7D

9.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373F7D	#FFFFFF	#000000	##FFFFFF
##373F7D	1.00	9.68	2.17	9.68
#FFFFFF	9.68	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#22477F

Deuteranopia (green-blind)

#1A427C

Tritanopia (blue-blind)

#154D58

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #373f7d;
/* rgb */ color: rgb(55, 63, 125);
/* oklch */ color: oklch(39.4% 0.104 275.1);

Tailwind

colors: {
  custom: {
    50: '#7473a3',
    500: '#373f7d',
    950: '#000000',
  },
}

SCSS

$custom: #373f7d;
$custom-light: #7473a3;
$custom-dark: #000000;

JSON

{
  "hex": "#373f7d",
  "rgb": {
    "r": 55,
    "g": 63,
    "b": 125
  },
  "hsl": {
    "h": 233.143,
    "s": 38.889,
    "l": 35.294
  },
  "oklch": {
    "l": 0.39426,
    "c": 0.10401,
    "h": 275.1
  },
  "luminance": 0.05848
}

Semantic roles & 50–950 ramp

primary

#373F7D

secondary

#A8A167

accent

#C159CF

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#08080F

muted

#7B7B7F

Preview Lab

Preview with #373F7D

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

Preview Lab → · Contrast checker → · Palette generator →