#373D87#373D87

#373D87 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.7% C 0.122 H 275.9°. Best body text is #FFFFFF at 9.63:1 contrast (WCAG AA passes).

Color values

HEX	#373D87
RGB	rgb(55, 61, 135)
HSL	hsl(236, 42%, 37%)
HSV	hsv(236, 59%, 53%)
CMYK	cmyk(59.3%, 54.8%, 0%, 47.1%)
CIE-LAB	lab(29.15, 20.93, -42.38)
CIE-LCH	lch(29.15, 47.26, 296.28°)
OKLab	oklab(39.75% 0.0124 -0.1213)
OKLCH	oklch(39.75% 0.122 275.9)
XYZ	xyz(7.6161, 5.8984, 23.6541)
Luminance	0.0590 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373D87 #878137

analogous

#376587 #373D87 #593787

triadic

#373D87 #87373D #3D8737

tetradic

#373D87 #873765 #878137 #378759

square

#373D87 #873765 #878137 #378759

split-complementary

#373D87 #875937 #658737

monochromatic

#141630 #25295C #373D87 #4951B2 #7379C6

Accessibility & contrast

On white

9.63

#373D87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#373D87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373D87

9.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373D87	#FFFFFF	#000000	##FFFFFF
##373D87	1.00	9.63	2.18	9.63
#FFFFFF	9.63	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#10488A

Deuteranopia (green-blind)

#004185

Tritanopia (blue-blind)

#044E5C

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #373d87;
/* rgb */ color: rgb(55, 61, 135);
/* oklch */ color: oklch(39.7% 0.122 275.9);

Tailwind

colors: {
  custom: {
    50: '#7672aa',
    500: '#373d87',
    950: '#000000',
  },
}

SCSS

$custom: #373d87;
$custom-light: #7672aa;
$custom-dark: #000000;

JSON

{
  "hex": "#373d87",
  "rgb": {
    "r": 55,
    "g": 61,
    "b": 135
  },
  "hsl": {
    "h": 235.5,
    "s": 42.105,
    "l": 37.255
  },
  "oklch": {
    "l": 0.39745,
    "c": 0.12198,
    "h": 275.9
  },
  "luminance": 0.05899
}

Semantic roles & 50–950 ramp

primary

#373D87

secondary

#AFA96B

accent

#C956D2

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#090810

muted

#7B7B7F

Preview Lab

Preview with #373D87

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

Preview Lab → · Contrast checker → · Palette generator →