#373DCB#373DCB

#373DCB is a mid, highly saturated blue. Relative luminance 0.085; OKLCH L 45.8% C 0.214 H 272.4°. Best body text is #FFFFFF at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#373DCB
RGB	rgb(55, 61, 203)
HSL	hsl(238, 59%, 51%)
HSV	hsv(238, 73%, 80%)
CMYK	cmyk(72.9%, 70%, 0%, 20.4%)
CIE-LAB	lab(34.92, 44.69, -73.75)
CIE-LCH	lch(34.92, 86.23, 301.21°)
OKLab	oklab(45.76% 0.0089 -0.2133)
OKLCH	oklch(45.76% 0.214 272.4)
XYZ	xyz(14.0202, 8.4601, 57.3824)
Luminance	0.0846 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue Blue

#2242C7

ΔE00 2.65

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373DCB #CBC537

analogous

#3787CB #373DCB #7B37CB

triadic

#373DCB #CB373D #3DCB37

tetradic

#373DCB #CB3787 #CBC537 #37CB7B

square

#373DCB #CB3787 #CBC537 #37CB7B

split-complementary

#373DCB #CB7B37 #87CB37

monochromatic

#1C1F6C #292D9C #373DCB #686CD8 #989BE4

Accessibility & contrast

On white

7.80

#373DCB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#373DCB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373DCB

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373DCB	#FFFFFF	#000000	##FFFFFF
##373DCB	1.00	7.80	2.69	7.80
#FFFFFF	7.80	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059CF

Deuteranopia (green-blind)

#004BC8

Tritanopia (blue-blind)

#00647F

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #373dcb;
/* rgb */ color: rgb(55, 61, 203);
/* oklch */ color: oklch(45.8% 0.214 272.4);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#373dcb",
  "rgb": {
    "r": 55,
    "g": 61,
    "b": 203
  },
  "hsl": {
    "h": 237.568,
    "s": 58.73,
    "l": 50.588
  },
  "oklch": {
    "l": 0.45758,
    "c": 0.21353,
    "h": 272.4
  },
  "luminance": 0.08462
}

Semantic roles & 50–950 ramp

primary

#373DCB

secondary

#D0CD8E

accent

#DC46E2

background

#F8F7FD

surface

#F0EDFB

border

#CBC8D4

text

#0D0815

muted

#7D7B83

Preview Lab

Preview with #373DCB

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

Preview Lab → · Contrast checker → · Palette generator →