#373899#373899

#373899 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.3% C 0.154 H 276.5°. Best body text is #FFFFFF at 9.60:1 contrast (WCAG AA passes).

Color values

HEX	#373899
RGB	rgb(55, 56, 153)
HSL	hsl(239, 47%, 41%)
HSV	hsv(239, 64%, 60%)
CMYK	cmyk(64.1%, 63.4%, 0%, 40%)
CIE-LAB	lab(29.26, 30.57, -53.28)
CIE-LCH	lch(29.26, 61.43, 299.85°)
OKLab	oklab(40.27% 0.0174 -0.1534)
OKLCH	oklch(40.27% 0.154 276.5)
XYZ	xyz(8.7376, 5.9398, 30.8169)
Luminance	0.0594 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373899 #999837

analogous

#376999 #373899 #673799

triadic

#373899 #993738 #389937

tetradic

#373899 #993769 #999837 #379967

square

#373899 #993769 #999837 #379967

split-complementary

#373899 #996737 #699937

monochromatic

#17173F #27286C #373899 #4E4FBF #7B7CD0

Accessibility & contrast

On white

9.60

#373899 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#373899 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373899

9.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373899	#FFFFFF	#000000	##FFFFFF
##373899	1.00	9.60	2.19	9.60
#FFFFFF	9.60	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00499C

Deuteranopia (green-blind)

#004197

Tritanopia (blue-blind)

#005063

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #373899;
/* rgb */ color: rgb(55, 56, 153);
/* oklch */ color: oklch(40.3% 0.154 276.5);

Tailwind

colors: {
  custom: {
    50: '#796fb8',
    500: '#373899',
    950: '#000000',
  },
}

SCSS

$custom: #373899;
$custom-light: #796fb8;
$custom-dark: #000000;

JSON

{
  "hex": "#373899",
  "rgb": {
    "r": 55,
    "g": 56,
    "b": 153
  },
  "hsl": {
    "h": 239.388,
    "s": 47.115,
    "l": 40.784
  },
  "oklch": {
    "l": 0.40265,
    "c": 0.15443,
    "h": 276.5
  },
  "luminance": 0.0594
}

Semantic roles & 50–950 ramp

primary

#373899

secondary

#B9B873

accent

#D551D7

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0711

muted

#7C7A80

Preview Lab

Preview with #373899

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

Preview Lab → · Contrast checker → · Palette generator →