#373BCB#373BCB

#373BCB is a mid, highly saturated blue. Relative luminance 0.083; OKLCH L 45.5% C 0.216 H 272.6°. Best body text is #FFFFFF at 7.92:1 contrast (WCAG AA passes).

Color values

HEX	#373BCB
RGB	rgb(55, 59, 203)
HSL	hsl(238, 59%, 51%)
HSV	hsv(238, 73%, 80%)
CMYK	cmyk(72.9%, 70.9%, 0%, 20.4%)
CIE-LAB	lab(34.50, 45.86, -74.45)
CIE-LCH	lch(34.50, 87.44, 301.63°)
OKLab	oklab(45.45% 0.0099 -0.2154)
OKLCH	oklch(45.45% 0.216 272.6)
XYZ	xyz(13.9154, 8.2505, 57.3475)
Luminance	0.0825 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue Blue

#2242C7

ΔE00 3.02

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373BCB #CBC737

analogous

#3785CB #373BCB #7D37CB

triadic

#373BCB #CB373B #3BCB37

tetradic

#373BCB #CB3785 #CBC737 #37CB7D

square

#373BCB #CB3785 #CBC737 #37CB7D

split-complementary

#373BCB #CB7D37 #85CB37

monochromatic

#1C1E6C #292C9C #373BCB #686BD8 #989AE4

Accessibility & contrast

On white

7.92

#373BCB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#373BCB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373BCB

7.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373BCB	#FFFFFF	#000000	##FFFFFF
##373BCB	1.00	7.92	2.65	7.92
#FFFFFF	7.92	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058CF

Deuteranopia (green-blind)

#004AC8

Tritanopia (blue-blind)

#00637F

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #373bcb;
/* rgb */ color: rgb(55, 59, 203);
/* oklch */ color: oklch(45.5% 0.216 272.6);

Tailwind

colors: {
  custom: {
    50: '#8472dc',
    500: '#373bcb',
    950: '#000000',
  },
}

SCSS

$custom: #373bcb;
$custom-light: #8472dc;
$custom-dark: #000000;

JSON

{
  "hex": "#373bcb",
  "rgb": {
    "r": 55,
    "g": 59,
    "b": 203
  },
  "hsl": {
    "h": 238.378,
    "s": 58.73,
    "l": 50.588
  },
  "oklch": {
    "l": 0.45453,
    "c": 0.21561,
    "h": 272.6
  },
  "luminance": 0.08252
}

Semantic roles & 50–950 ramp

primary

#373BCB

secondary

#D0CE8E

accent

#DE46E2

background

#F8F7FD

surface

#F0EDFB

border

#CBC8D4

text

#0D0815

muted

#7D7B83

Preview Lab

Preview with #373BCB

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

Preview Lab → · Contrast checker → · Palette generator →