#373D91#373D91

#373D91 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.5% C 0.137 H 275.4°. Best body text is #FFFFFF at 9.38:1 contrast (WCAG AA passes).

Color values

HEX	#373D91
RGB	rgb(55, 61, 145)
HSL	hsl(236, 45%, 39%)
HSV	hsv(236, 62%, 57%)
CMYK	cmyk(62.1%, 57.9%, 0%, 43.1%)
CIE-LAB	lab(29.90, 24.48, -47.35)
CIE-LCH	lch(29.90, 53.30, 297.34°)
OKLab	oklab(40.53% 0.0129 -0.136)
OKLCH	oklch(40.53% 0.137 275.4)
XYZ	xyz(8.3535, 6.1934, 27.5378)
Luminance	0.0619 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373D91 #918B37

analogous

#376A91 #373D91 #5E3791

triadic

#373D91 #91373D #3D9137

tetradic

#373D91 #91376A #918B37 #37915E

square

#373D91 #91376A #918B37 #37915E

split-complementary

#373D91 #915E37 #6A9137

monochromatic

#151838 #262A65 #373D91 #4B52BB #777DCB

Accessibility & contrast

On white

9.38

#373D91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#373D91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373D91

9.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373D91	#FFFFFF	#000000	##FFFFFF
##373D91	1.00	9.38	2.24	9.38
#FFFFFF	9.38	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A94

Deuteranopia (green-blind)

#00438F

Tritanopia (blue-blind)

#005161

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #373d91;
/* rgb */ color: rgb(55, 61, 145);
/* oklch */ color: oklch(40.5% 0.137 275.4);

Tailwind

colors: {
  custom: {
    50: '#7772b2',
    500: '#373d91',
    950: '#000000',
  },
}

SCSS

$custom: #373d91;
$custom-light: #7772b2;
$custom-dark: #000000;

JSON

{
  "hex": "#373d91",
  "rgb": {
    "r": 55,
    "g": 61,
    "b": 145
  },
  "hsl": {
    "h": 236,
    "s": 45,
    "l": 39.216
  },
  "oklch": {
    "l": 0.40533,
    "c": 0.13658,
    "h": 275.4
  },
  "luminance": 0.06194
}

Semantic roles & 50–950 ramp

primary

#373D91

secondary

#B4B070

accent

#CC53D5

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #373D91

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

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