#373BC4#373BC4

#373BC4 is a dark, highly saturated blue. Relative luminance 0.079; OKLCH L 44.8% C 0.207 H 273.0°. Best body text is #FFFFFF at 8.12:1 contrast (WCAG AA passes).

Color values

HEX	#373BC4
RGB	rgb(55, 59, 196)
HSL	hsl(238, 56%, 49%)
HSV	hsv(238, 72%, 77%)
CMYK	cmyk(71.9%, 69.9%, 0%, 23.1%)
CIE-LAB	lab(33.82, 43.51, -71.47)
CIE-LCH	lch(33.82, 83.68, 301.33°)
OKLab	oklab(44.77% 0.0109 -0.2067)
OKLCH	oklch(44.77% 0.207 273)
XYZ	xyz(13.1000, 7.9244, 53.0530)
Luminance	0.0793 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue Blue

#2242C7

ΔE00 2.89

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373BC4 #C4C037

analogous

#3782C4 #373BC4 #7A37C4

triadic

#373BC4 #C4373B #3BC437

tetradic

#373BC4 #C43782 #C4C037 #37C47A

square

#373BC4 #C43782 #C4C037 #37C47A

split-complementary

#373BC4 #C47A37 #82C437

monochromatic

#1C1E64 #2A2D94 #373BC4 #6568D4 #9497E1

Accessibility & contrast

On white

8.12

#373BC4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#373BC4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373BC4

8.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373BC4	#FFFFFF	#000000	##FFFFFF
##373BC4	1.00	8.12	2.59	8.12
#FFFFFF	8.12	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056C8

Deuteranopia (green-blind)

#0049C1

Tritanopia (blue-blind)

#00617B

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #373bc4;
/* rgb */ color: rgb(55, 59, 196);
/* oklch */ color: oklch(44.8% 0.207 273.0);

Tailwind

colors: {
  custom: {
    50: '#8272d7',
    500: '#373bc4',
    950: '#000000',
  },
}

SCSS

$custom: #373bc4;
$custom-light: #8272d7;
$custom-dark: #000000;

JSON

{
  "hex": "#373bc4",
  "rgb": {
    "r": 55,
    "g": 59,
    "b": 196
  },
  "hsl": {
    "h": 238.298,
    "s": 56.175,
    "l": 49.216
  },
  "oklch": {
    "l": 0.44766,
    "c": 0.207,
    "h": 273
  },
  "luminance": 0.07926
}

Semantic roles & 50–950 ramp

primary

#373BC4

secondary

#CCCA8B

accent

#DB48DF

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0815

muted

#7D7B83

Preview Lab

Preview with #373BC4

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

Preview Lab → · Contrast checker → · Palette generator →