#373DA0#373DA0

#373DA0 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.8% C 0.158 H 274.6°. Best body text is #FFFFFF at 8.98:1 contrast (WCAG AA passes).

Color values

HEX	#373DA0
RGB	rgb(55, 61, 160)
HSL	hsl(237, 49%, 42%)
HSV	hsv(237, 66%, 63%)
CMYK	cmyk(65.6%, 61.9%, 0%, 37.3%)
CIE-LAB	lab(31.08, 29.80, -54.56)
CIE-LCH	lch(31.08, 62.17, 298.65°)
OKLab	oklab(41.79% 0.0127 -0.1572)
OKLCH	oklch(41.79% 0.158 274.6)
XYZ	xyz(9.5874, 6.6870, 34.0364)
Luminance	0.0669 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373DA0 #A09A37

analogous

#3772A0 #373DA0 #6537A0

triadic

#373DA0 #A0373D #3DA037

tetradic

#373DA0 #A03772 #A09A37 #37A065

square

#373DA0 #A03772 #A09A37 #37A065

split-complementary

#373DA0 #A06537 #72A037

monochromatic

#181A45 #272C72 #373DA0 #5158C3 #7F83D3

Accessibility & contrast

On white

8.98

#373DA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#373DA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373DA0

8.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373DA0	#FFFFFF	#000000	##FFFFFF
##373DA0	1.00	8.98	2.34	8.98
#FFFFFF	8.98	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA3

Deuteranopia (green-blind)

#00459E

Tritanopia (blue-blind)

#005668

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #373da0;
/* rgb */ color: rgb(55, 61, 160);
/* oklch */ color: oklch(41.8% 0.158 274.6);

Tailwind

colors: {
  custom: {
    50: '#7a72bd',
    500: '#373da0',
    950: '#000000',
  },
}

SCSS

$custom: #373da0;
$custom-light: #7a72bd;
$custom-dark: #000000;

JSON

{
  "hex": "#373da0",
  "rgb": {
    "r": 55,
    "g": 61,
    "b": 160
  },
  "hsl": {
    "h": 236.571,
    "s": 48.837,
    "l": 42.157
  },
  "oklch": {
    "l": 0.41787,
    "c": 0.15767,
    "h": 274.6
  },
  "luminance": 0.06688
}

Semantic roles & 50–950 ramp

primary

#373DA0

secondary

#BCB877

accent

#D14FD8

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #373DA0

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

Preview Lab → · Contrast checker → · Palette generator →