#373BCC#373BCC

#373BCC is a mid, highly saturated blue. Relative luminance 0.083; OKLCH L 45.6% C 0.217 H 272.6°. Best body text is #FFFFFF at 7.89:1 contrast (WCAG AA passes).

Color values

HEX	#373BCC
RGB	rgb(55, 59, 204)
HSL	hsl(238, 59%, 51%)
HSV	hsv(238, 73%, 80%)
CMYK	cmyk(73%, 71.1%, 0%, 20%)
CIE-LAB	lab(34.60, 46.19, -74.87)
CIE-LCH	lch(34.60, 87.97, 301.67°)
OKLab	oklab(45.55% 0.0098 -0.2166)
OKLCH	oklch(45.55% 0.217 272.6)
XYZ	xyz(14.0349, 8.2983, 57.9771)
Luminance	0.0830 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue Blue

#2242C7

ΔE00 3.06

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373BCC #CCC837

analogous

#3785CC #373BCC #7D37CC

triadic

#373BCC #CC373B #3BCC37

tetradic

#373BCC #CC3785 #CCC837 #37CC7D

square

#373BCC #CC3785 #CCC837 #37CC7D

split-complementary

#373BCC #CC7D37 #85CC37

monochromatic

#1C1E6D #282B9E #373BCC #686BD8 #999BE5

Accessibility & contrast

On white

7.89

#373BCC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#373BCC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373BCC

7.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373BCC	#FFFFFF	#000000	##FFFFFF
##373BCC	1.00	7.89	2.66	7.89
#FFFFFF	7.89	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058D0

Deuteranopia (green-blind)

#004AC9

Tritanopia (blue-blind)

#00647F

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #373bcc;
/* rgb */ color: rgb(55, 59, 204);
/* oklch */ color: oklch(45.6% 0.217 272.6);

Tailwind

colors: {
  custom: {
    50: '#8472dd',
    500: '#373bcc',
    950: '#000000',
  },
}

SCSS

$custom: #373bcc;
$custom-light: #8472dd;
$custom-dark: #000000;

JSON

{
  "hex": "#373bcc",
  "rgb": {
    "r": 55,
    "g": 59,
    "b": 204
  },
  "hsl": {
    "h": 238.389,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.45552,
    "c": 0.21683,
    "h": 272.6
  },
  "luminance": 0.083
}

Semantic roles & 50–950 ramp

primary

#373BCC

secondary

#D0CF8E

accent

#DE45E3

background

#F8F7FD

surface

#F0EDFB

border

#CBC8D4

text

#0D0815

muted

#7D7B83

Preview Lab

Preview with #373BCC

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

Preview Lab → · Contrast checker → · Palette generator →