#373AD9#373AD9

#373AD9 is a mid, highly saturated blue. Relative luminance 0.088; OKLCH L 46.7% C 0.233 H 272.0°. Best body text is #FFFFFF at 7.58:1 contrast (WCAG AA passes).

Color values

HEX	#373AD9
RGB	rgb(55, 58, 217)
HSL	hsl(239, 68%, 53%)
HSV	hsv(239, 75%, 85%)
CMYK	cmyk(74.7%, 73.3%, 0%, 14.9%)
CIE-LAB	lab(35.69, 51.02, -80.59)
CIE-LCH	lch(35.69, 95.38, 302.34°)
OKLab	oklab(46.72% 0.0083 -0.2333)
OKLCH	oklch(46.72% 0.233 272)
XYZ	xyz(15.6088, 8.8464, 66.5171)
Luminance	0.0885 (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

#373AD9 #D9D637

analogous

#378BD9 #373AD9 #8537D9

triadic

#373AD9 #D9373A #3AD937

tetradic

#373AD9 #D9378B #D9D637 #37D985

square

#373AD9 #D9378B #D9D637 #37D985

split-complementary

#373AD9 #D98537 #8BD937

monochromatic

#181A7E #2224B1 #373AD9 #6A6DE3 #9E9FED

Accessibility & contrast

On white

7.58

#373AD9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.77

#373AD9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373AD9

7.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373AD9	#FFFFFF	#000000	##FFFFFF
##373AD9	1.00	7.58	2.77	7.58
#FFFFFF	7.58	1.00	21.00	1.00
#000000	2.77	21.00	1.00	21.00
##FFFFFF	7.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CDE

Deuteranopia (green-blind)

#004CD6

Tritanopia (blue-blind)

#006886

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #373ad9;
/* rgb */ color: rgb(55, 58, 217);
/* oklch */ color: oklch(46.7% 0.233 272.0);

Tailwind

colors: {
  custom: {
    50: '#8772e6',
    500: '#373ad9',
    950: '#000000',
  },
}

SCSS

$custom: #373ad9;
$custom-light: #8772e6;
$custom-dark: #000000;

JSON

{
  "hex": "#373ad9",
  "rgb": {
    "r": 55,
    "g": 58,
    "b": 217
  },
  "hsl": {
    "h": 238.889,
    "s": 68.067,
    "l": 53.333
  },
  "oklch": {
    "l": 0.46717,
    "c": 0.23341,
    "h": 272
  },
  "luminance": 0.08848
}

Semantic roles & 50–950 ramp

primary

#373AD9

secondary

#D9D793

accent

#E83DEB

background

#F9F7FE

surface

#F1EDFD

border

#CBC8D5

text

#0D0816

muted

#7E7B84

Preview Lab

Preview with #373AD9

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

Preview Lab → · Contrast checker → · Palette generator →