#373BAF#373BAF

#373BAF is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.8% C 0.180 H 274.2°. Best body text is #FFFFFF at 8.72:1 contrast (WCAG AA passes).

Color values

HEX	#373BAF
RGB	rgb(55, 59, 175)
HSL	hsl(238, 52%, 45%)
HSV	hsv(238, 69%, 69%)
CMYK	cmyk(68.6%, 66.3%, 0%, 31.4%)
CIE-LAB	lab(31.88, 36.33, -62.25)
CIE-LCH	lch(31.88, 72.08, 300.27°)
OKLab	oklab(42.77% 0.0133 -0.1797)
OKLCH	oklch(42.77% 0.18 274.2)
XYZ	xyz(10.8748, 7.0343, 41.3338)
Luminance	0.0703 (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

#373BAF #AFAB37

analogous

#3777AF #373BAF #6F37AF

triadic

#373BAF #AF373B #3BAF37

tetradic

#373BAF #AF3777 #AFAB37 #37AF6F

square

#373BAF #AF3777 #AFAB37 #37AF6F

split-complementary

#373BAF #AF6F37 #77AF37

monochromatic

#1A1C52 #282B80 #373BAF #595CCB #878AD9

Accessibility & contrast

On white

8.72

#373BAF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#373BAF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373BAF

8.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373BAF	#FFFFFF	#000000	##FFFFFF
##373BAF	1.00	8.72	2.41	8.72
#FFFFFF	8.72	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B3

Deuteranopia (green-blind)

#0046AD

Tritanopia (blue-blind)

#005970

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #373baf;
/* rgb */ color: rgb(55, 59, 175);
/* oklch */ color: oklch(42.8% 0.180 274.2);

Tailwind

colors: {
  custom: {
    50: '#7e71c8',
    500: '#373baf',
    950: '#000000',
  },
}

SCSS

$custom: #373baf;
$custom-light: #7e71c8;
$custom-dark: #000000;

JSON

{
  "hex": "#373baf",
  "rgb": {
    "r": 55,
    "g": 59,
    "b": 175
  },
  "hsl": {
    "h": 238,
    "s": 52.174,
    "l": 45.098
  },
  "oklch": {
    "l": 0.42772,
    "c": 0.18024,
    "h": 274.2
  },
  "luminance": 0.07035
}

Semantic roles & 50–950 ramp

primary

#373BAF

secondary

#C3C17F

accent

#D74CDC

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #373BAF

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

Preview Lab → · Contrast checker → · Palette generator →