#373EC1#373EC1

#373EC1 is a dark, vivid blue. Relative luminance 0.081; OKLCH L 45.0% C 0.200 H 272.7°. Best body text is #FFFFFF at 8.01:1 contrast (WCAG AA passes).

Color values

HEX	#373EC1
RGB	rgb(55, 62, 193)
HSL	hsl(237, 56%, 49%)
HSV	hsv(237, 72%, 76%)
CMYK	cmyk(71.5%, 67.9%, 0%, 24.3%)
CIE-LAB	lab(34.20, 40.70, -69.09)
CIE-LCH	lch(34.20, 80.19, 300.50°)
OKLab	oklab(44.95% 0.0095 -0.1997)
OKLCH	oklch(44.95% 0.2 272.7)
XYZ	xyz(12.9206, 8.1064, 51.3255)
Luminance	0.0811 (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

#373EC1 #C1BA37

analogous

#3783C1 #373EC1 #7537C1

triadic

#373EC1 #C1373E #3EC137

tetradic

#373EC1 #C13783 #C1BA37 #37C175

square

#373EC1 #C13783 #C1BA37 #37C175

split-complementary

#373EC1 #C17537 #83C137

monochromatic

#1C1F62 #292F91 #373EC1 #6368D2 #9296E0

Accessibility & contrast

On white

8.01

#373EC1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#373EC1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373EC1

8.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373EC1	#FFFFFF	#000000	##FFFFFF
##373EC1	1.00	8.01	2.62	8.01
#FFFFFF	8.01	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057C5

Deuteranopia (green-blind)

#004ABF

Tritanopia (blue-blind)

#00617A

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #373ec1;
/* rgb */ color: rgb(55, 62, 193);
/* oklch */ color: oklch(45.0% 0.200 272.7);

Tailwind

colors: {
  custom: {
    50: '#8174d5',
    500: '#373ec1',
    950: '#000000',
  },
}

SCSS

$custom: #373ec1;
$custom-light: #8174d5;
$custom-dark: #000000;

JSON

{
  "hex": "#373ec1",
  "rgb": {
    "r": 55,
    "g": 62,
    "b": 193
  },
  "hsl": {
    "h": 236.957,
    "s": 55.645,
    "l": 48.627
  },
  "oklch": {
    "l": 0.44954,
    "c": 0.19998,
    "h": 272.7
  },
  "luminance": 0.08108
}

Semantic roles & 50–950 ramp

primary

#373EC1

secondary

#CBC889

accent

#D749DF

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #373EC1

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

Preview Lab → · Contrast checker → · Palette generator →