#373BBA#373BBA

#373BBA is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.8% C 0.194 H 273.6°. Best body text is #FFFFFF at 8.41:1 contrast (WCAG AA passes).

Color values

HEX	#373BBA
RGB	rgb(55, 59, 186)
HSL	hsl(238, 54%, 47%)
HSV	hsv(238, 70%, 73%)
CMYK	cmyk(70.4%, 68.3%, 0%, 27.1%)
CIE-LAB	lab(32.88, 40.12, -67.14)
CIE-LCH	lch(32.88, 78.21, 300.86°)
OKLab	oklab(43.8% 0.0122 -0.194)
OKLCH	oklch(43.8% 0.194 273.6)
XYZ	xyz(11.9995, 7.4842, 47.2571)
Luminance	0.0748 (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

#373BBA #BAB637

analogous

#377DBA #373BBA #7537BA

triadic

#373BBA #BA373B #3BBA37

tetradic

#373BBA #BA377D #BAB637 #37BA75

square

#373BBA #BA377D #BAB637 #37BA75

split-complementary

#373BBA #BA7537 #7DBA37

monochromatic

#1B1D5C #292C8B #373BBA #5F62D0 #8E90DE

Accessibility & contrast

On white

8.41

#373BBA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#373BBA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373BBA

8.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373BBA	#FFFFFF	#000000	##FFFFFF
##373BBA	1.00	8.41	2.50	8.41
#FFFFFF	8.41	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BE

Deuteranopia (green-blind)

#0047B8

Tritanopia (blue-blind)

#005D76

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #373bba;
/* rgb */ color: rgb(55, 59, 186);
/* oklch */ color: oklch(43.8% 0.194 273.6);

Tailwind

colors: {
  custom: {
    50: '#8071d0',
    500: '#373bba',
    950: '#000000',
  },
}

SCSS

$custom: #373bba;
$custom-light: #8071d0;
$custom-dark: #000000;

JSON

{
  "hex": "#373bba",
  "rgb": {
    "r": 55,
    "g": 59,
    "b": 186
  },
  "hsl": {
    "h": 238.168,
    "s": 54.357,
    "l": 47.255
  },
  "oklch": {
    "l": 0.43803,
    "c": 0.19443,
    "h": 273.6
  },
  "luminance": 0.07485
}

Semantic roles & 50–950 ramp

primary

#373BBA

secondary

#C8C685

accent

#D94ADE

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #373BBA

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

Preview Lab → · Contrast checker → · Palette generator →