#373FC5#373FC5

#373FC5 is a mid, highly saturated blue. Relative luminance 0.084; OKLCH L 45.5% C 0.204 H 272.4°. Best body text is #FFFFFF at 7.84:1 contrast (WCAG AA passes).

Color values

HEX	#373FC5
RGB	rgb(55, 63, 197)
HSL	hsl(237, 56%, 49%)
HSV	hsv(237, 72%, 77%)
CMYK	cmyk(72.1%, 68%, 0%, 22.7%)
CIE-LAB	lab(34.80, 41.46, -70.46)
CIE-LCH	lch(34.80, 81.75, 300.47°)
OKLab	oklab(45.5% 0.0085 -0.2037)
OKLCH	oklch(45.5% 0.204 272.4)
XYZ	xyz(13.4277, 8.3971, 53.7256)
Luminance	0.0840 (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

#373FC5 #C5BD37

analogous

#3786C5 #373FC5 #7637C5

triadic

#373FC5 #C5373F #3FC537

tetradic

#373FC5 #C53786 #C5BD37 #37C576

square

#373FC5 #C53786 #C5BD37 #37C576

split-complementary

#373FC5 #C57637 #86C537

monochromatic

#1C2065 #2A3095 #373FC5 #656BD4 #9599E1

Accessibility & contrast

On white

7.84

#373FC5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#373FC5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373FC5

7.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373FC5	#FFFFFF	#000000	##FFFFFF
##373FC5	1.00	7.84	2.68	7.84
#FFFFFF	7.84	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059C9

Deuteranopia (green-blind)

#004BC3

Tritanopia (blue-blind)

#00637D

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #373fc5;
/* rgb */ color: rgb(55, 63, 197);
/* oklch */ color: oklch(45.5% 0.204 272.4);

Tailwind

colors: {
  custom: {
    50: '#8275d8',
    500: '#373fc5',
    950: '#000000',
  },
}

SCSS

$custom: #373fc5;
$custom-light: #8275d8;
$custom-dark: #000000;

JSON

{
  "hex": "#373fc5",
  "rgb": {
    "r": 55,
    "g": 63,
    "b": 197
  },
  "hsl": {
    "h": 236.62,
    "s": 56.349,
    "l": 49.412
  },
  "oklch": {
    "l": 0.45496,
    "c": 0.20393,
    "h": 272.4
  },
  "luminance": 0.08398
}

Semantic roles & 50–950 ramp

primary

#373FC5

secondary

#CDC98B

accent

#D748E0

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0815

muted

#7D7B83

Preview Lab

Preview with #373FC5

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

Preview Lab → · Contrast checker → · Palette generator →