#373AC9#373AC9

#373AC9 is a mid, highly saturated blue. Relative luminance 0.081; OKLCH L 45.1% C 0.214 H 272.9°. Best body text is #FFFFFF at 8.04:1 contrast (WCAG AA passes).

Color values

HEX	#373AC9
RGB	rgb(55, 58, 201)
HSL	hsl(239, 57%, 50%)
HSV	hsv(239, 73%, 79%)
CMYK	cmyk(72.6%, 71.1%, 0%, 21.2%)
CIE-LAB	lab(34.10, 45.77, -73.95)
CIE-LCH	lch(34.10, 86.97, 301.75°)
OKLab	oklab(45.11% 0.0107 -0.2139)
OKLCH	oklch(45.11% 0.214 272.9)
XYZ	xyz(13.6277, 8.0540, 56.0834)
Luminance	0.0805 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue Blue

#2242C7

ΔE00 3.16

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373AC9 #C9C637

analogous

#3783C9 #373AC9 #7D37C9

triadic

#373AC9 #C9373A #3AC937

tetradic

#373AC9 #C93783 #C9C637 #37C97D

square

#373AC9 #C93783 #C9C637 #37C97D

split-complementary

#373AC9 #C97D37 #83C937

monochromatic

#1C1E69 #292C99 #373AC9 #6769D6 #9799E3

Accessibility & contrast

On white

8.04

#373AC9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#373AC9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373AC9

8.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373AC9	#FFFFFF	#000000	##FFFFFF
##373AC9	1.00	8.04	2.61	8.04
#FFFFFF	8.04	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057CD

Deuteranopia (green-blind)

#0049C6

Tritanopia (blue-blind)

#00627E

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #373ac9;
/* rgb */ color: rgb(55, 58, 201);
/* oklch */ color: oklch(45.1% 0.214 272.9);

Tailwind

colors: {
  custom: {
    50: '#8471db',
    500: '#373ac9',
    950: '#000000',
  },
}

SCSS

$custom: #373ac9;
$custom-light: #8471db;
$custom-dark: #000000;

JSON

{
  "hex": "#373ac9",
  "rgb": {
    "r": 55,
    "g": 58,
    "b": 201
  },
  "hsl": {
    "h": 238.767,
    "s": 57.48,
    "l": 50.196
  },
  "oklch": {
    "l": 0.45105,
    "c": 0.2142,
    "h": 272.9
  },
  "luminance": 0.08055
}

Semantic roles & 50–950 ramp

primary

#373AC9

secondary

#CFCD8D

accent

#DE47E1

background

#F8F6FD

surface

#F0ECFB

border

#CBC7D4

text

#0D0815

muted

#7D7B83

Preview Lab

Preview with #373AC9

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

Preview Lab → · Contrast checker → · Palette generator →