#372EA6#372EA6

#372EA6 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.8% C 0.183 H 277.4°. Best body text is #FFFFFF at 9.98:1 contrast (WCAG AA passes).

Color values

HEX	#372EA6
RGB	rgb(55, 46, 166)
HSL	hsl(245, 57%, 42%)
HSV	hsv(245, 72%, 65%)
CMYK	cmyk(66.9%, 72.3%, 0%, 34.9%)
CIE-LAB	lab(28.16, 41.13, -62.96)
CIE-LCH	lch(28.16, 75.21, 303.16°)
OKLab	oklab(39.83% 0.0236 -0.1818)
OKLCH	oklch(39.83% 0.183 277.4)
XYZ	xyz(9.4332, 5.5186, 36.6371)
Luminance	0.0552 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.69

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#372EA6 #9DA62E

analogous

#2E61A6 #372EA6 #732EA6

triadic

#372EA6 #A6372E #2EA637

tetradic

#372EA6 #A62E61 #9DA62E #2EA673

square

#372EA6 #A62E61 #9DA62E #2EA673

split-complementary

#372EA6 #A6732E #61A62E

monochromatic

#171346 #272176 #372EA6 #5046CC #7D76D9

Accessibility & contrast

On white

9.98

#372EA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#372EA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #372EA6

9.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##372EA6	#FFFFFF	#000000	##FFFFFF
##372EA6	1.00	9.98	2.10	9.98
#FFFFFF	9.98	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	9.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047AA

Deuteranopia (green-blind)

#003DA4

Tritanopia (blue-blind)

#004F67

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #372ea6;
/* rgb */ color: rgb(55, 46, 166);
/* oklch */ color: oklch(39.8% 0.183 277.4);

Tailwind

colors: {
  custom: {
    50: '#7d68c2',
    500: '#372ea6',
    950: '#000000',
  },
}

SCSS

$custom: #372ea6;
$custom-light: #7d68c2;
$custom-dark: #000000;

JSON

{
  "hex": "#372ea6",
  "rgb": {
    "r": 55,
    "g": 46,
    "b": 166
  },
  "hsl": {
    "h": 244.5,
    "s": 56.604,
    "l": 41.569
  },
  "oklch": {
    "l": 0.39834,
    "c": 0.18335,
    "h": 277.4
  },
  "luminance": 0.05519
}

Semantic roles & 50–950 ramp

primary

#372EA6

secondary

#BBC16F

accent

#E048D4

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #372EA6

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

Preview Lab → · Contrast checker → · Palette generator →