#373EAB#373EAB

#373EAB is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.9% C 0.171 H 273.8°. Best body text is #FFFFFF at 8.61:1 contrast (WCAG AA passes).

Color values

HEX	#373EAB
RGB	rgb(55, 62, 171)
HSL	hsl(236, 51%, 44%)
HSV	hsv(236, 68%, 67%)
CMYK	cmyk(67.8%, 63.7%, 0%, 32.9%)
CIE-LAB	lab(32.25, 33.05, -59.27)
CIE-LCH	lch(32.25, 67.86, 299.14°)
OKLab	oklab(42.93% 0.0114 -0.171)
OKLCH	oklch(42.93% 0.171 273.8)
XYZ	xyz(10.6464, 7.1968, 39.3482)
Luminance	0.0720 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373EAB #ABA437

analogous

#3778AB #373EAB #6A37AB

triadic

#373EAB #AB373E #3EAB37

tetradic

#373EAB #AB3778 #ABA437 #37AB6A

square

#373EAB #AB3778 #ABA437 #37AB6A

split-complementary

#373EAB #AB6A37 #78AB37

monochromatic

#191C4E #282D7D #373EAB #565DC9 #858AD8

Accessibility & contrast

On white

8.61

#373EAB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#373EAB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373EAB

8.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373EAB	#FFFFFF	#000000	##FFFFFF
##373EAB	1.00	8.61	2.44	8.61
#FFFFFF	8.61	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051AE

Deuteranopia (green-blind)

#0047A9

Tritanopia (blue-blind)

#005A6E

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #373eab;
/* rgb */ color: rgb(55, 62, 171);
/* oklch */ color: oklch(42.9% 0.171 273.8);

Tailwind

colors: {
  custom: {
    50: '#7d73c5',
    500: '#373eab',
    950: '#000000',
  },
}

SCSS

$custom: #373eab;
$custom-light: #7d73c5;
$custom-dark: #000000;

JSON

{
  "hex": "#373eab",
  "rgb": {
    "r": 55,
    "g": 62,
    "b": 171
  },
  "hsl": {
    "h": 236.379,
    "s": 51.327,
    "l": 44.314
  },
  "oklch": {
    "l": 0.42931,
    "c": 0.17136,
    "h": 273.8
  },
  "luminance": 0.07198
}

Semantic roles & 50–950 ramp

primary

#373EAB

secondary

#C1BD7C

accent

#D24DDB

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #373EAB

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

Preview Lab → · Contrast checker → · Palette generator →