#373FC4#373FC4

#373FC4 is a mid, highly saturated blue. Relative luminance 0.084; OKLCH L 45.4% C 0.203 H 272.4°. Best body text is #FFFFFF at 7.86:1 contrast (WCAG AA passes).

Color values

HEX	#373FC4
RGB	rgb(55, 63, 196)
HSL	hsl(237, 56%, 49%)
HSV	hsv(237, 72%, 77%)
CMYK	cmyk(71.9%, 67.9%, 0%, 23.1%)
CIE-LAB	lab(34.70, 41.12, -70.03)
CIE-LCH	lch(34.70, 81.21, 300.42°)
OKLab	oklab(45.4% 0.0086 -0.2025)
OKLCH	oklch(45.4% 0.203 272.4)
XYZ	xyz(13.3135, 8.3514, 53.1242)
Luminance	0.0835 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373FC4 #C4BC37

analogous

#3786C4 #373FC4 #7637C4

triadic

#373FC4 #C4373F #3FC437

tetradic

#373FC4 #C43786 #C4BC37 #37C476

square

#373FC4 #C43786 #C4BC37 #37C476

split-complementary

#373FC4 #C47637 #86C437

monochromatic

#1C2064 #2A3094 #373FC4 #656BD4 #9499E1

Accessibility & contrast

On white

7.86

#373FC4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#373FC4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373FC4

7.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373FC4	#FFFFFF	#000000	##FFFFFF
##373FC4	1.00	7.86	2.67	7.86
#FFFFFF	7.86	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058C8

Deuteranopia (green-blind)

#004BC2

Tritanopia (blue-blind)

#00637C

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #373fc4;
/* rgb */ color: rgb(55, 63, 196);
/* oklch */ color: oklch(45.4% 0.203 272.4);

Tailwind

colors: {
  custom: {
    50: '#8274d7',
    500: '#373fc4',
    950: '#000000',
  },
}

SCSS

$custom: #373fc4;
$custom-light: #8274d7;
$custom-dark: #000000;

JSON

{
  "hex": "#373fc4",
  "rgb": {
    "r": 55,
    "g": 63,
    "b": 196
  },
  "hsl": {
    "h": 236.596,
    "s": 56.175,
    "l": 49.216
  },
  "oklch": {
    "l": 0.45401,
    "c": 0.20266,
    "h": 272.4
  },
  "luminance": 0.08353
}

Semantic roles & 50–950 ramp

primary

#373FC4

secondary

#CCC98B

accent

#D748DF

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0815

muted

#7D7B83

Preview Lab

Preview with #373FC4

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

Preview Lab → · Contrast checker → · Palette generator →