#373B97#373B97

#373B97 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.6% C 0.148 H 275.7°. Best body text is #FFFFFF at 9.40:1 contrast (WCAG AA passes).

Color values

HEX	#373B97
RGB	rgb(55, 59, 151)
HSL	hsl(238, 47%, 40%)
HSV	hsv(238, 64%, 59%)
CMYK	cmyk(63.6%, 60.9%, 0%, 40.8%)
CIE-LAB	lab(29.85, 27.92, -51.10)
CIE-LCH	lch(29.85, 58.23, 298.65°)
OKLab	oklab(40.64% 0.0148 -0.147)
OKLCH	oklch(40.64% 0.148 275.7)
XYZ	xyz(8.7236, 6.1738, 30.0041)
Luminance	0.0617 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373B97 #979337

analogous

#376B97 #373B97 #633797

triadic

#373B97 #97373B #3B9737

tetradic

#373B97 #97376B #979337 #379763

square

#373B97 #97376B #979337 #379763

split-complementary

#373B97 #976337 #6B9737

monochromatic

#16183D #27296A #373B97 #4D52BE #7A7DCF

Accessibility & contrast

On white

9.40

#373B97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#373B97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373B97

9.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373B97	#FFFFFF	#000000	##FFFFFF
##373B97	1.00	9.40	2.24	9.40
#FFFFFF	9.40	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9A

Deuteranopia (green-blind)

#004295

Tritanopia (blue-blind)

#005263

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #373b97;
/* rgb */ color: rgb(55, 59, 151);
/* oklch */ color: oklch(40.6% 0.148 275.7);

Tailwind

colors: {
  custom: {
    50: '#7971b6',
    500: '#373b97',
    950: '#000000',
  },
}

SCSS

$custom: #373b97;
$custom-light: #7971b6;
$custom-dark: #000000;

JSON

{
  "hex": "#373b97",
  "rgb": {
    "r": 55,
    "g": 59,
    "b": 151
  },
  "hsl": {
    "h": 237.5,
    "s": 46.602,
    "l": 40.392
  },
  "oklch": {
    "l": 0.40645,
    "c": 0.14776,
    "h": 275.7
  },
  "luminance": 0.06175
}

Semantic roles & 50–950 ramp

primary

#373B97

secondary

#B8B572

accent

#D152D6

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0711

muted

#7C7A80

Preview Lab

Preview with #373B97

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

Preview Lab → · Contrast checker → · Palette generator →