#373DA7#373DA7

#373DA7 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.4% C 0.167 H 274.3°. Best body text is #FFFFFF at 8.79:1 contrast (WCAG AA passes).

Color values

HEX	#373DA7
RGB	rgb(55, 61, 167)
HSL	hsl(237, 50%, 44%)
HSV	hsv(237, 67%, 65%)
CMYK	cmyk(67.1%, 63.5%, 0%, 34.5%)
CIE-LAB	lab(31.67, 32.28, -57.82)
CIE-LCH	lch(31.67, 66.22, 299.17°)
OKLab	oklab(42.4% 0.0124 -0.1667)
OKLCH	oklch(42.4% 0.167 274.3)
XYZ	xyz(10.2170, 6.9388, 37.3526)
Luminance	0.0694 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.15

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373DA7 #A7A137

analogous

#3775A7 #373DA7 #6937A7

triadic

#373DA7 #A7373D #3DA737

tetradic

#373DA7 #A73775 #A7A137 #37A769

square

#373DA7 #A73775 #A7A137 #37A769

split-complementary

#373DA7 #A76937 #75A737

monochromatic

#191B4B #282C79 #373DA7 #545BC7 #8287D6

Accessibility & contrast

On white

8.79

#373DA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#373DA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373DA7

8.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373DA7	#FFFFFF	#000000	##FFFFFF
##373DA7	1.00	8.79	2.39	8.79
#FFFFFF	8.79	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AA

Deuteranopia (green-blind)

#0046A5

Tritanopia (blue-blind)

#00586C

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #373da7;
/* rgb */ color: rgb(55, 61, 167);
/* oklch */ color: oklch(42.4% 0.167 274.3);

Tailwind

colors: {
  custom: {
    50: '#7c72c2',
    500: '#373da7',
    950: '#000000',
  },
}

SCSS

$custom: #373da7;
$custom-light: #7c72c2;
$custom-dark: #000000;

JSON

{
  "hex": "#373da7",
  "rgb": {
    "r": 55,
    "g": 61,
    "b": 167
  },
  "hsl": {
    "h": 236.786,
    "s": 50.45,
    "l": 43.529
  },
  "oklch": {
    "l": 0.42398,
    "c": 0.16721,
    "h": 274.3
  },
  "luminance": 0.0694
}

Semantic roles & 50–950 ramp

primary

#373DA7

secondary

#C0BC7A

accent

#D24EDA

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #373DA7

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

Preview Lab → · Contrast checker → · Palette generator →