#373CD9#373CD9

#373CD9 is a mid, highly saturated blue. Relative luminance 0.091; OKLCH L 47.0% C 0.231 H 271.8°. Best body text is #FFFFFF at 7.47:1 contrast (WCAG AA passes).

Color values

HEX	#373CD9
RGB	rgb(55, 60, 217)
HSL	hsl(238, 68%, 53%)
HSV	hsv(238, 75%, 85%)
CMYK	cmyk(74.7%, 72.4%, 0%, 14.9%)
CIE-LAB	lab(36.08, 49.91, -79.93)
CIE-LCH	lch(36.08, 94.23, 301.98°)
OKLab	oklab(47% 0.0074 -0.2314)
OKLCH	oklch(47% 0.231 271.8)
XYZ	xyz(15.7116, 9.0520, 66.5514)
Luminance	0.0905 (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

#373CD9 #D9D437

analogous

#378DD9 #373CD9 #8337D9

triadic

#373CD9 #D9373C #3CD937

tetradic

#373CD9 #D9378D #D9D437 #37D983

square

#373CD9 #D9378D #D9D437 #37D983

split-complementary

#373CD9 #D98337 #8DD937

monochromatic

#181B7E #2226B1 #373CD9 #6A6EE3 #9EA0ED

Accessibility & contrast

On white

7.47

#373CD9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#373CD9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373CD9

7.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373CD9	#FFFFFF	#000000	##FFFFFF
##373CD9	1.00	7.47	2.81	7.47
#FFFFFF	7.47	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DDE

Deuteranopia (green-blind)

#004DD6

Tritanopia (blue-blind)

#006987

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #373cd9;
/* rgb */ color: rgb(55, 60, 217);
/* oklch */ color: oklch(47.0% 0.231 271.8);

Tailwind

colors: {
  custom: {
    50: '#8773e6',
    500: '#373cd9',
    950: '#000000',
  },
}

SCSS

$custom: #373cd9;
$custom-light: #8773e6;
$custom-dark: #000000;

JSON

{
  "hex": "#373cd9",
  "rgb": {
    "r": 55,
    "g": 60,
    "b": 217
  },
  "hsl": {
    "h": 238.148,
    "s": 68.067,
    "l": 53.333
  },
  "oklch": {
    "l": 0.47,
    "c": 0.23148,
    "h": 271.8
  },
  "luminance": 0.09054
}

Semantic roles & 50–950 ramp

primary

#373CD9

secondary

#D9D793

accent

#E63DEB

background

#F9F7FE

surface

#F1EDFD

border

#CBC8D5

text

#0D0816

muted

#7E7B84

Preview Lab

Preview with #373CD9

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

Preview Lab → · Contrast checker → · Palette generator →