#373AD0#373AD0

#373AD0 is a mid, highly saturated blue. Relative luminance 0.084; OKLCH L 45.8% C 0.223 H 272.5°. Best body text is #FFFFFF at 7.84:1 contrast (WCAG AA passes).

Color values

HEX	#373AD0
RGB	rgb(55, 58, 208)
HSL	hsl(239, 62%, 52%)
HSV	hsv(239, 74%, 82%)
CMYK	cmyk(73.6%, 72.1%, 0%, 18.4%)
CIE-LAB	lab(34.78, 48.08, -76.88)
CIE-LCH	lch(34.78, 90.68, 302.02°)
OKLab	oklab(45.8% 0.0097 -0.2225)
OKLCH	oklch(45.8% 0.223 272.5)
XYZ	xyz(14.4699, 8.3909, 60.5193)
Luminance	0.0839 (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

#373AD0 #D0CD37

analogous

#3786D0 #373AD0 #8137D0

triadic

#373AD0 #D0373A #3AD037

tetradic

#373AD0 #D03786 #D0CD37 #37D081

square

#373AD0 #D03786 #D0CD37 #37D081

split-complementary

#373AD0 #D08137 #86D037

monochromatic

#1B1C72 #2629A3 #373AD0 #696BDC #9A9CE7

Accessibility & contrast

On white

7.84

#373AD0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#373AD0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373AD0

7.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373AD0	#FFFFFF	#000000	##FFFFFF
##373AD0	1.00	7.84	2.68	7.84
#FFFFFF	7.84	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059D4

Deuteranopia (green-blind)

#004ACD

Tritanopia (blue-blind)

#006581

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #373ad0;
/* rgb */ color: rgb(55, 58, 208);
/* oklch */ color: oklch(45.8% 0.223 272.5);

Tailwind

colors: {
  custom: {
    50: '#8572e0',
    500: '#373ad0',
    950: '#000000',
  },
}

SCSS

$custom: #373ad0;
$custom-light: #8572e0;
$custom-dark: #000000;

JSON

{
  "hex": "#373ad0",
  "rgb": {
    "r": 55,
    "g": 58,
    "b": 208
  },
  "hsl": {
    "h": 238.824,
    "s": 61.943,
    "l": 51.569
  },
  "oklch": {
    "l": 0.45804,
    "c": 0.22268,
    "h": 272.5
  },
  "luminance": 0.08392
}

Semantic roles & 50–950 ramp

primary

#373AD0

secondary

#D3D290

accent

#E243E5

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #373AD0

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

Preview Lab → · Contrast checker → · Palette generator →