#373BA9#373BA9

#373BA9 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.2% C 0.172 H 274.6°. Best body text is #FFFFFF at 8.89:1 contrast (WCAG AA passes).

Color values

HEX	#373BA9
RGB	rgb(55, 59, 169)
HSL	hsl(238, 51%, 44%)
HSV	hsv(238, 67%, 66%)
CMYK	cmyk(67.5%, 65.1%, 0%, 33.7%)
CIE-LAB	lab(31.36, 34.25, -59.53)
CIE-LCH	lch(31.36, 68.68, 299.91°)
OKLab	oklab(42.22% 0.0138 -0.1718)
OKLCH	oklch(42.22% 0.172 274.6)
XYZ	xyz(10.2986, 6.8038, 38.2990)
Luminance	0.0680 (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

#373BA9 #A9A537

analogous

#3774A9 #373BA9 #6C37A9

triadic

#373BA9 #A9373B #3BA937

tetradic

#373BA9 #A93774 #A9A537 #37A96C

square

#373BA9 #A93774 #A9A537 #37A96C

split-complementary

#373BA9 #A96C37 #74A937

monochromatic

#191B4D #282B7B #373BA9 #5559C8 #8486D7

Accessibility & contrast

On white

8.89

#373BA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#373BA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373BA9

8.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373BA9	#FFFFFF	#000000	##FFFFFF
##373BA9	1.00	8.89	2.36	8.89
#FFFFFF	8.89	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAC

Deuteranopia (green-blind)

#0045A7

Tritanopia (blue-blind)

#00576C

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #373ba9;
/* rgb */ color: rgb(55, 59, 169);
/* oklch */ color: oklch(42.2% 0.172 274.6);

Tailwind

colors: {
  custom: {
    50: '#7c71c4',
    500: '#373ba9',
    950: '#000000',
  },
}

SCSS

$custom: #373ba9;
$custom-light: #7c71c4;
$custom-dark: #000000;

JSON

{
  "hex": "#373ba9",
  "rgb": {
    "r": 55,
    "g": 59,
    "b": 169
  },
  "hsl": {
    "h": 237.895,
    "s": 50.893,
    "l": 43.922
  },
  "oklch": {
    "l": 0.42223,
    "c": 0.17233,
    "h": 274.6
  },
  "luminance": 0.06805
}

Semantic roles & 50–950 ramp

primary

#373BA9

secondary

#C0BE7B

accent

#D54DDA

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #373BA9

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

Preview Lab → · Contrast checker → · Palette generator →