#373EAF#373EAF

#373EAF is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.3% C 0.177 H 273.6°. Best body text is #FFFFFF at 8.50:1 contrast (WCAG AA passes).

Color values

HEX	#373EAF
RGB	rgb(55, 62, 175)
HSL	hsl(237, 52%, 45%)
HSV	hsv(237, 69%, 69%)
CMYK	cmyk(68.6%, 64.6%, 0%, 31.4%)
CIE-LAB	lab(32.59, 34.45, -61.09)
CIE-LCH	lch(32.59, 70.14, 299.42°)
OKLab	oklab(43.29% 0.0111 -0.1763)
OKLCH	oklch(43.29% 0.177 273.6)
XYZ	xyz(11.0335, 7.3516, 41.3867)
Luminance	0.0735 (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

#373EAF #AFA837

analogous

#377AAF #373EAF #6C37AF

triadic

#373EAF #AF373E #3EAF37

tetradic

#373EAF #AF377A #AFA837 #37AF6C

square

#373EAF #AF377A #AFA837 #37AF6C

split-complementary

#373EAF #AF6C37 #7AAF37

monochromatic

#1A1D52 #282E80 #373EAF #595FCB #878CD9

Accessibility & contrast

On white

8.50

#373EAF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#373EAF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373EAF

8.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373EAF	#FFFFFF	#000000	##FFFFFF
##373EAF	1.00	8.50	2.47	8.50
#FFFFFF	8.50	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B3

Deuteranopia (green-blind)

#0047AD

Tritanopia (blue-blind)

#005B71

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #373eaf;
/* rgb */ color: rgb(55, 62, 175);
/* oklch */ color: oklch(43.3% 0.177 273.6);

Tailwind

colors: {
  custom: {
    50: '#7d73c8',
    500: '#373eaf',
    950: '#000000',
  },
}

SCSS

$custom: #373eaf;
$custom-light: #7d73c8;
$custom-dark: #000000;

JSON

{
  "hex": "#373eaf",
  "rgb": {
    "r": 55,
    "g": 62,
    "b": 175
  },
  "hsl": {
    "h": 236.5,
    "s": 52.174,
    "l": 45.098
  },
  "oklch": {
    "l": 0.43289,
    "c": 0.17668,
    "h": 273.6
  },
  "luminance": 0.07353
}

Semantic roles & 50–950 ramp

primary

#373EAF

secondary

#C3BF7F

accent

#D34CDC

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #373EAF

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

Preview Lab → · Contrast checker → · Palette generator →