#373BBF#373BBF

#373BBF is a dark, highly saturated blue. Relative luminance 0.077; OKLCH L 44.3% C 0.201 H 273.3°. Best body text is #FFFFFF at 8.27:1 contrast (WCAG AA passes).

Color values

HEX	#373BBF
RGB	rgb(55, 59, 191)
HSL	hsl(238, 55%, 48%)
HSV	hsv(238, 71%, 75%)
CMYK	cmyk(71.2%, 69.1%, 0%, 25.1%)
CIE-LAB	lab(33.35, 41.82, -69.32)
CIE-LCH	lch(33.35, 80.96, 301.10°)
OKLab	oklab(44.28% 0.0116 -0.2004)
OKLCH	oklch(44.28% 0.201 273.3)
XYZ	xyz(12.5403, 7.7005, 50.1056)
Luminance	0.0770 (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

#373BBF #BFBB37

analogous

#377FBF #373BBF #7737BF

triadic

#373BBF #BF373B #3BBF37

tetradic

#373BBF #BF377F #BFBB37 #37BF77

square

#373BBF #BF377F #BFBB37 #37BF77

split-complementary

#373BBF #BF7737 #7FBF37

monochromatic

#1C1E60 #292C8F #373BBF #6265D2 #9193DF

Accessibility & contrast

On white

8.27

#373BBF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#373BBF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373BBF

8.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373BBF	#FFFFFF	#000000	##FFFFFF
##373BBF	1.00	8.27	2.54	8.27
#FFFFFF	8.27	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055C3

Deuteranopia (green-blind)

#0048BD

Tritanopia (blue-blind)

#005F78

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #373bbf;
/* rgb */ color: rgb(55, 59, 191);
/* oklch */ color: oklch(44.3% 0.201 273.3);

Tailwind

colors: {
  custom: {
    50: '#8172d3',
    500: '#373bbf',
    950: '#000000',
  },
}

SCSS

$custom: #373bbf;
$custom-light: #8172d3;
$custom-dark: #000000;

JSON

{
  "hex": "#373bbf",
  "rgb": {
    "r": 55,
    "g": 59,
    "b": 191
  },
  "hsl": {
    "h": 238.235,
    "s": 55.285,
    "l": 48.235
  },
  "oklch": {
    "l": 0.44281,
    "c": 0.20075,
    "h": 273.3
  },
  "luminance": 0.07702
}

Semantic roles & 50–950 ramp

primary

#373BBF

secondary

#CAC888

accent

#DA49DF

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #373BBF

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

Preview Lab → · Contrast checker → · Palette generator →