#373E91#373E91

#373E91 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.7% C 0.135 H 275.0°. Best body text is #FFFFFF at 9.29:1 contrast (WCAG AA passes).

Color values

HEX	#373E91
RGB	rgb(55, 62, 145)
HSL	hsl(235, 45%, 39%)
HSV	hsv(235, 62%, 57%)
CMYK	cmyk(62.1%, 57.2%, 0%, 43.1%)
CIE-LAB	lab(30.16, 23.82, -46.92)
CIE-LCH	lch(30.16, 52.62, 296.91°)
OKLab	oklab(40.73% 0.0119 -0.1347)
OKLCH	oklch(40.73% 0.135 275)
XYZ	xyz(8.4073, 6.3011, 27.5558)
Luminance	0.0630 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373E91 #918A37

analogous

#376B91 #373E91 #5D3791

triadic

#373E91 #91373E #3E9137

tetradic

#373E91 #91376B #918A37 #37915D

square

#373E91 #91376B #918A37 #37915D

split-complementary

#373E91 #915D37 #6B9137

monochromatic

#151838 #262B65 #373E91 #4B53BB #777ECB

Accessibility & contrast

On white

9.29

#373E91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#373E91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373E91

9.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373E91	#FFFFFF	#000000	##FFFFFF
##373E91	1.00	9.29	2.26	9.29
#FFFFFF	9.29	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B94

Deuteranopia (green-blind)

#00438F

Tritanopia (blue-blind)

#005261

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #373e91;
/* rgb */ color: rgb(55, 62, 145);
/* oklch */ color: oklch(40.7% 0.135 275.0);

Tailwind

colors: {
  custom: {
    50: '#7773b2',
    500: '#373e91',
    950: '#000000',
  },
}

SCSS

$custom: #373e91;
$custom-light: #7773b2;
$custom-dark: #000000;

JSON

{
  "hex": "#373e91",
  "rgb": {
    "r": 55,
    "g": 62,
    "b": 145
  },
  "hsl": {
    "h": 235.333,
    "s": 45,
    "l": 39.216
  },
  "oklch": {
    "l": 0.4073,
    "c": 0.13522,
    "h": 275
  },
  "luminance": 0.06302
}

Semantic roles & 50–950 ramp

primary

#373E91

secondary

#B4AF70

accent

#CB53D5

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #373E91

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

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