#373C8E#373C8E

#373C8E is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.1% C 0.134 H 275.9°. Best body text is #FFFFFF at 9.55:1 contrast (WCAG AA passes).

Color values

HEX	#373C8E
RGB	rgb(55, 60, 142)
HSL	hsl(237, 44%, 39%)
HSV	hsv(237, 61%, 56%)
CMYK	cmyk(61.3%, 57.7%, 0%, 44.3%)
CIE-LAB	lab(29.40, 24.08, -46.30)
CIE-LCH	lch(29.40, 52.19, 297.47°)
OKLab	oklab(40.1% 0.0138 -0.1329)
OKLCH	oklch(40.1% 0.134 275.9)
XYZ	xyz(8.0723, 5.9963, 26.3180)
Luminance	0.0600 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373C8E #8E8937

analogous

#37678E #373C8E #5D378E

triadic

#373C8E #8E373C #3C8E37

tetradic

#373C8E #8E3767 #8E8937 #378E5D

square

#373C8E #8E3767 #8E8937 #378E5D

split-complementary

#373C8E #8E5D37 #678E37

monochromatic

#151736 #262962 #373C8E #4950B9 #767ACA

Accessibility & contrast

On white

9.55

#373C8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#373C8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373C8E

9.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373C8E	#FFFFFF	#000000	##FFFFFF
##373C8E	1.00	9.55	2.20	9.55
#FFFFFF	9.55	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004991

Deuteranopia (green-blind)

#00428C

Tritanopia (blue-blind)

#004F5F

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #373c8e;
/* rgb */ color: rgb(55, 60, 142);
/* oklch */ color: oklch(40.1% 0.134 275.9);

Tailwind

colors: {
  custom: {
    50: '#7771b0',
    500: '#373c8e',
    950: '#000000',
  },
}

SCSS

$custom: #373c8e;
$custom-light: #7771b0;
$custom-dark: #000000;

JSON

{
  "hex": "#373c8e",
  "rgb": {
    "r": 55,
    "g": 60,
    "b": 142
  },
  "hsl": {
    "h": 236.552,
    "s": 44.162,
    "l": 38.627
  },
  "oklch": {
    "l": 0.40095,
    "c": 0.13362,
    "h": 275.9
  },
  "luminance": 0.05997
}

Semantic roles & 50–950 ramp

primary

#373C8E

secondary

#B3AF6E

accent

#CD54D4

background

#F7F6FA

surface

#EEECF5

border

#C9C7CF

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #373C8E

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

Preview Lab → · Contrast checker → · Palette generator →