#373E8A#373E8A

#373E8A is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.2% C 0.125 H 275.3°. Best body text is #FFFFFF at 9.47:1 contrast (WCAG AA passes).

Color values

HEX	#373E8A
RGB	rgb(55, 62, 138)
HSL	hsl(235, 43%, 38%)
HSV	hsv(235, 60%, 54%)
CMYK	cmyk(60.1%, 55.1%, 0%, 45.9%)
CIE-LAB	lab(29.64, 21.32, -43.45)
CIE-LCH	lch(29.64, 48.40, 296.14°)
OKLab	oklab(40.18% 0.0115 -0.1245)
OKLCH	oklch(40.18% 0.125 275.3)
XYZ	xyz(7.8841, 6.0919, 24.8002)
Luminance	0.0609 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373E8A #8A8337

analogous

#37678A #373E8A #5A378A

triadic

#373E8A #8A373E #3E8A37

tetradic

#373E8A #8A3767 #8A8337 #378A5A

square

#373E8A #8A3767 #8A8337 #378A5A

split-complementary

#373E8A #8A5A37 #678A37

monochromatic

#141732 #262A5E #373E8A #4852B6 #747BC8

Accessibility & contrast

On white

9.47

#373E8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#373E8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373E8A

9.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373E8A	#FFFFFF	#000000	##FFFFFF
##373E8A	1.00	9.47	2.22	9.47
#FFFFFF	9.47	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E498D

Deuteranopia (green-blind)

#004288

Tritanopia (blue-blind)

#00505E

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #373e8a;
/* rgb */ color: rgb(55, 62, 138);
/* oklch */ color: oklch(40.2% 0.125 275.3);

Tailwind

colors: {
  custom: {
    50: '#7673ad',
    500: '#373e8a',
    950: '#000000',
  },
}

SCSS

$custom: #373e8a;
$custom-light: #7673ad;
$custom-dark: #000000;

JSON

{
  "hex": "#373e8a",
  "rgb": {
    "r": 55,
    "g": 62,
    "b": 138
  },
  "hsl": {
    "h": 234.94,
    "s": 43.005,
    "l": 37.843
  },
  "oklch": {
    "l": 0.4018,
    "c": 0.12501,
    "h": 275.3
  },
  "luminance": 0.06092
}

Semantic roles & 50–950 ramp

primary

#373E8A

secondary

#B0AB6D

accent

#C855D3

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#090810

muted

#7B7B7F

Preview Lab

Preview with #373E8A

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

Preview Lab → · Contrast checker → · Palette generator →