#373CCB#373CCB

#373CCB is a mid, highly saturated blue. Relative luminance 0.084; OKLCH L 45.6% C 0.215 H 272.5°. Best body text is #FFFFFF at 7.86:1 contrast (WCAG AA passes).

Color values

HEX	#373CCB
RGB	rgb(55, 60, 203)
HSL	hsl(238, 59%, 51%)
HSV	hsv(238, 73%, 80%)
CMYK	cmyk(72.9%, 70.4%, 0%, 20.4%)
CIE-LAB	lab(34.71, 45.27, -74.10)
CIE-LCH	lch(34.71, 86.84, 301.42°)
OKLab	oklab(45.61% 0.0094 -0.2144)
OKLCH	oklch(45.61% 0.215 272.5)
XYZ	xyz(13.9673, 8.3543, 57.3648)
Luminance	0.0836 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue Blue

#2242C7

ΔE00 2.83

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373CCB #CBC637

analogous

#3786CB #373CCB #7C37CB

triadic

#373CCB #CB373C #3CCB37

tetradic

#373CCB #CB3786 #CBC637 #37CB7C

square

#373CCB #CB3786 #CBC637 #37CB7C

split-complementary

#373CCB #CB7C37 #86CB37

monochromatic

#1C1F6C #292D9C #373CCB #686BD8 #989BE4

Accessibility & contrast

On white

7.86

#373CCB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#373CCB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373CCB

7.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373CCB	#FFFFFF	#000000	##FFFFFF
##373CCB	1.00	7.86	2.67	7.86
#FFFFFF	7.86	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059CF

Deuteranopia (green-blind)

#004AC8

Tritanopia (blue-blind)

#00647F

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #373ccb;
/* rgb */ color: rgb(55, 60, 203);
/* oklch */ color: oklch(45.6% 0.215 272.5);

Tailwind

colors: {
  custom: {
    50: '#8473dc',
    500: '#373ccb',
    950: '#000000',
  },
}

SCSS

$custom: #373ccb;
$custom-light: #8473dc;
$custom-dark: #000000;

JSON

{
  "hex": "#373ccb",
  "rgb": {
    "r": 55,
    "g": 60,
    "b": 203
  },
  "hsl": {
    "h": 237.973,
    "s": 58.73,
    "l": 50.588
  },
  "oklch": {
    "l": 0.45605,
    "c": 0.21458,
    "h": 272.5
  },
  "luminance": 0.08356
}

Semantic roles & 50–950 ramp

primary

#373CCB

secondary

#D0CE8E

accent

#DD46E2

background

#F8F7FD

surface

#F0EDFB

border

#CBC8D4

text

#0D0815

muted

#7D7B83

Preview Lab

Preview with #373CCB

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

Preview Lab → · Contrast checker → · Palette generator →