#373AC5#373AC5

#373AC5 is a dark, highly saturated blue. Relative luminance 0.079; OKLCH L 44.7% C 0.209 H 273.1°. Best body text is #FFFFFF at 8.16:1 contrast (WCAG AA passes).

Color values

HEX	#373AC5
RGB	rgb(55, 58, 197)
HSL	hsl(239, 56%, 49%)
HSV	hsv(239, 72%, 77%)
CMYK	cmyk(72.1%, 70.6%, 0%, 22.7%)
CIE-LAB	lab(33.71, 44.44, -72.25)
CIE-LCH	lch(33.71, 84.82, 301.59°)
OKLab	oklab(44.71% 0.0113 -0.209)
OKLCH	oklch(44.71% 0.209 273.1)
XYZ	xyz(13.1633, 7.8682, 53.6375)
Luminance	0.0787 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue Blue

#2242C7

ΔE00 3.10

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373AC5 #C5C237

analogous

#3781C5 #373AC5 #7B37C5

triadic

#373AC5 #C5373A #3AC537

tetradic

#373AC5 #C53781 #C5C237 #37C57B

square

#373AC5 #C53781 #C5C237 #37C57B

split-complementary

#373AC5 #C57B37 #81C537

monochromatic

#1C1E65 #2A2C95 #373AC5 #6567D4 #9597E1

Accessibility & contrast

On white

8.16

#373AC5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#373AC5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373AC5

8.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373AC5	#FFFFFF	#000000	##FFFFFF
##373AC5	1.00	8.16	2.57	8.16
#FFFFFF	8.16	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056C9

Deuteranopia (green-blind)

#0048C2

Tritanopia (blue-blind)

#00617B

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #373ac5;
/* rgb */ color: rgb(55, 58, 197);
/* oklch */ color: oklch(44.7% 0.209 273.1);

Tailwind

colors: {
  custom: {
    50: '#8371d8',
    500: '#373ac5',
    950: '#000000',
  },
}

SCSS

$custom: #373ac5;
$custom-light: #8371d8;
$custom-dark: #000000;

JSON

{
  "hex": "#373ac5",
  "rgb": {
    "r": 55,
    "g": 58,
    "b": 197
  },
  "hsl": {
    "h": 238.732,
    "s": 56.349,
    "l": 49.412
  },
  "oklch": {
    "l": 0.4471,
    "c": 0.20929,
    "h": 273.1
  },
  "luminance": 0.0787
}

Semantic roles & 50–950 ramp

primary

#373AC5

secondary

#CDCB8B

accent

#DC48E0

background

#F8F6FD

surface

#F0ECFB

border

#CBC7D4

text

#0C0815

muted

#7D7B83

Preview Lab

Preview with #373AC5

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

Preview Lab → · Contrast checker → · Palette generator →