#373A87#373A87

#373A87 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.1% C 0.126 H 277.2°. Best body text is #FFFFFF at 9.92:1 contrast (WCAG AA passes).

Color values

HEX	#373A87
RGB	rgb(55, 58, 135)
HSL	hsl(238, 42%, 37%)
HSV	hsv(238, 59%, 53%)
CMYK	cmyk(59.3%, 57%, 0%, 47.1%)
CIE-LAB	lab(28.35, 22.93, -43.68)
CIE-LCH	lch(28.35, 49.34, 297.70°)
OKLab	oklab(39.14% 0.0157 -0.1252)
OKLCH	oklch(39.14% 0.126 277.2)
XYZ	xyz(7.4604, 5.5871, 23.6023)
Luminance	0.0559 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373A87 #878437

analogous

#376287 #373A87 #5C3787

triadic

#373A87 #87373A #3A8737

tetradic

#373A87 #873762 #878437 #37875C

square

#373A87 #873762 #878437 #37875C

split-complementary

#373A87 #875C37 #628737

monochromatic

#141530 #25275C #373A87 #494DB2 #7376C6

Accessibility & contrast

On white

9.92

#373A87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#373A87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373A87

9.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373A87	#FFFFFF	#000000	##FFFFFF
##373A87	1.00	9.92	2.12	9.92
#FFFFFF	9.92	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#02468A

Deuteranopia (green-blind)

#004085

Tritanopia (blue-blind)

#054C5A

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #373a87;
/* rgb */ color: rgb(55, 58, 135);
/* oklch */ color: oklch(39.1% 0.126 277.2);

Tailwind

colors: {
  custom: {
    50: '#7670ab',
    500: '#373a87',
    950: '#000000',
  },
}

SCSS

$custom: #373a87;
$custom-light: #7670ab;
$custom-dark: #000000;

JSON

{
  "hex": "#373a87",
  "rgb": {
    "r": 55,
    "g": 58,
    "b": 135
  },
  "hsl": {
    "h": 237.75,
    "s": 42.105,
    "l": 37.255
  },
  "oklch": {
    "l": 0.3914,
    "c": 0.12621,
    "h": 277.2
  },
  "luminance": 0.05588
}

Semantic roles & 50–950 ramp

primary

#373A87

secondary

#AFAC6B

accent

#CD56D2

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #373A87

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

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