#373CA7#373CA7

#373CA7 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.2% C 0.168 H 274.5°. Best body text is #FFFFFF at 8.87:1 contrast (WCAG AA passes).

Color values

HEX	#373CA7
RGB	rgb(55, 60, 167)
HSL	hsl(237, 50%, 44%)
HSV	hsv(237, 67%, 65%)
CMYK	cmyk(67.1%, 64.1%, 0%, 34.5%)
CIE-LAB	lab(31.42, 32.91, -58.22)
CIE-LCH	lch(31.42, 66.88, 299.48°)
OKLab	oklab(42.22% 0.0132 -0.1679)
OKLCH	oklch(42.22% 0.168 274.5)
XYZ	xyz(10.1642, 6.8331, 37.3350)
Luminance	0.0683 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.08

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373CA7 #A7A237

analogous

#3774A7 #373CA7 #6A37A7

triadic

#373CA7 #A7373C #3CA737

tetradic

#373CA7 #A73774 #A7A237 #37A76A

square

#373CA7 #A73774 #A7A237 #37A76A

split-complementary

#373CA7 #A76A37 #74A737

monochromatic

#191B4B #282B79 #373CA7 #5459C7 #8286D6

Accessibility & contrast

On white

8.87

#373CA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#373CA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373CA7

8.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373CA7	#FFFFFF	#000000	##FFFFFF
##373CA7	1.00	8.87	2.37	8.87
#FFFFFF	8.87	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAA

Deuteranopia (green-blind)

#0045A5

Tritanopia (blue-blind)

#00576C

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #373ca7;
/* rgb */ color: rgb(55, 60, 167);
/* oklch */ color: oklch(42.2% 0.168 274.5);

Tailwind

colors: {
  custom: {
    50: '#7c72c2',
    500: '#373ca7',
    950: '#000000',
  },
}

SCSS

$custom: #373ca7;
$custom-light: #7c72c2;
$custom-dark: #000000;

JSON

{
  "hex": "#373ca7",
  "rgb": {
    "r": 55,
    "g": 60,
    "b": 167
  },
  "hsl": {
    "h": 237.321,
    "s": 50.45,
    "l": 43.529
  },
  "oklch": {
    "l": 0.4222,
    "c": 0.16844,
    "h": 274.5
  },
  "luminance": 0.06834
}

Semantic roles & 50–950 ramp

primary

#373CA7

secondary

#C0BC7A

accent

#D44EDA

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #373CA7

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

Preview Lab → · Contrast checker → · Palette generator →