#373FAE#373FAE

#373FAE is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.4% C 0.174 H 273.4°. Best body text is #FFFFFF at 8.45:1 contrast (WCAG AA passes).

Color values

HEX	#373FAE
RGB	rgb(55, 63, 174)
HSL	hsl(236, 52%, 45%)
HSV	hsv(236, 68%, 68%)
CMYK	cmyk(68.4%, 63.8%, 0%, 31.8%)
CIE-LAB	lab(32.75, 33.47, -60.24)
CIE-LCH	lch(32.75, 68.91, 299.05°)
OKLab	oklab(43.38% 0.0104 -0.1738)
OKLCH	oklch(43.38% 0.174 273.4)
XYZ	xyz(10.9905, 7.4222, 40.8896)
Luminance	0.0742 (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

#373FAE #AEA637

analogous

#377BAE #373FAE #6A37AE

triadic

#373FAE #AE373F #3FAE37

tetradic

#373FAE #AE377B #AEA637 #37AE6A

square

#373FAE #AE377B #AEA637 #37AE6A

split-complementary

#373FAE #AE6A37 #7BAE37

monochromatic

#1A1D51 #282E7F #373FAE #5860CA #868CD9

Accessibility & contrast

On white

8.45

#373FAE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#373FAE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373FAE

8.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373FAE	#FFFFFF	#000000	##FFFFFF
##373FAE	1.00	8.45	2.48	8.45
#FFFFFF	8.45	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B2

Deuteranopia (green-blind)

#0048AC

Tritanopia (blue-blind)

#005B70

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #373fae;
/* rgb */ color: rgb(55, 63, 174);
/* oklch */ color: oklch(43.4% 0.174 273.4);

Tailwind

colors: {
  custom: {
    50: '#7d74c7',
    500: '#373fae',
    950: '#000000',
  },
}

SCSS

$custom: #373fae;
$custom-light: #7d74c7;
$custom-dark: #000000;

JSON

{
  "hex": "#373fae",
  "rgb": {
    "r": 55,
    "g": 63,
    "b": 174
  },
  "hsl": {
    "h": 235.966,
    "s": 51.965,
    "l": 44.902
  },
  "oklch": {
    "l": 0.43376,
    "c": 0.17414,
    "h": 273.4
  },
  "luminance": 0.07423
}

Semantic roles & 50–950 ramp

primary

#373FAE

secondary

#C3BE7E

accent

#D24CDB

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #373FAE

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

Preview Lab → · Contrast checker → · Palette generator →