#3723B1#3723B1

#3723B1 is a dark, highly saturated blue. Relative luminance 0.052; OKLCH L 39.5% C 0.207 H 277.5°. Best body text is #FFFFFF at 10.31:1 contrast (WCAG AA passes).

Color values

HEX	#3723B1
RGB	rgb(55, 35, 177)
HSL	hsl(248, 67%, 42%)
HSV	hsv(248, 80%, 69%)
CMYK	cmyk(68.9%, 80.2%, 0%, 30.6%)
CIE-LAB	lab(27.26, 50.43, -71.06)
CIE-LCH	lch(27.26, 87.13, 305.36°)
OKLab	oklab(39.54% 0.0271 -0.2053)
OKLCH	oklch(39.54% 0.207 277.5)
XYZ	xyz(10.1098, 5.1877, 42.0550)
Luminance	0.0519 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3723B1 #9DB123

analogous

#2356B1 #3723B1 #7E23B1

triadic

#3723B1 #B13723 #23B137

tetradic

#3723B1 #B12356 #9DB123 #23B17E

square

#3723B1 #B12356 #9DB123 #23B17E

split-complementary

#3723B1 #B17E23 #56B123

monochromatic

#170F4B #27197E #3723B1 #5039D8 #7D6CE2

Accessibility & contrast

On white

10.31

#3723B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#3723B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3723B1

10.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3723B1	#FFFFFF	#000000	##FFFFFF
##3723B1	1.00	10.31	2.04	10.31
#FFFFFF	10.31	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0046B5

Deuteranopia (green-blind)

#003AAF

Tritanopia (blue-blind)

#004F6A

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #3723b1;
/* rgb */ color: rgb(55, 35, 177);
/* oklch */ color: oklch(39.5% 0.207 277.5);

Tailwind

colors: {
  custom: {
    50: '#8062ca',
    500: '#3723b1',
    950: '#000000',
  },
}

SCSS

$custom: #3723b1;
$custom-light: #8062ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3723b1",
  "rgb": {
    "r": 55,
    "g": 35,
    "b": 177
  },
  "hsl": {
    "h": 248.451,
    "s": 66.981,
    "l": 41.569
  },
  "oklch": {
    "l": 0.39541,
    "c": 0.2071,
    "h": 277.5
  },
  "luminance": 0.05189
}

Semantic roles & 50–950 ramp

primary

#3723B1

secondary

#BBC868

accent

#EA3ED2

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0513

muted

#7D7A82

Preview Lab

Preview with #3723B1

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

Preview Lab → · Contrast checker → · Palette generator →