#3723B0#3723B0

#3723B0 is a dark, highly saturated blue. Relative luminance 0.051; OKLCH L 39.4% C 0.206 H 277.6°. Best body text is #FFFFFF at 10.35:1 contrast (WCAG AA passes).

Color values

HEX	#3723B0
RGB	rgb(55, 35, 176)
HSL	hsl(249, 67%, 41%)
HSV	hsv(249, 80%, 69%)
CMYK	cmyk(68.8%, 80.1%, 0%, 31%)
CIE-LAB	lab(27.15, 50.12, -70.64)
CIE-LCH	lch(27.15, 86.62, 305.36°)
OKLab	oklab(39.43% 0.0274 -0.2041)
OKLCH	oklch(39.43% 0.206 277.6)
XYZ	xyz(10.0105, 5.1480, 41.5320)
Luminance	0.0515 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3723B0 #9CB023

analogous

#2355B0 #3723B0 #7E23B0

triadic

#3723B0 #B03723 #23B037

tetradic

#3723B0 #B02355 #9CB023 #23B07E

square

#3723B0 #B02355 #9CB023 #23B07E

split-complementary

#3723B0 #B07E23 #55B023

monochromatic

#170F4A #27197D #3723B0 #4F39D8 #7C6CE2

Accessibility & contrast

On white

10.35

#3723B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#3723B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3723B0

10.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3723B0	#FFFFFF	#000000	##FFFFFF
##3723B0	1.00	10.35	2.03	10.35
#FFFFFF	10.35	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0046B4

Deuteranopia (green-blind)

#003AAE

Tritanopia (blue-blind)

#004E6A

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #3723b0;
/* rgb */ color: rgb(55, 35, 176);
/* oklch */ color: oklch(39.4% 0.206 277.6);

Tailwind

colors: {
  custom: {
    50: '#8062c9',
    500: '#3723b0',
    950: '#000000',
  },
}

SCSS

$custom: #3723b0;
$custom-light: #8062c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3723b0",
  "rgb": {
    "r": 55,
    "g": 35,
    "b": 176
  },
  "hsl": {
    "h": 248.511,
    "s": 66.825,
    "l": 41.373
  },
  "oklch": {
    "l": 0.39432,
    "c": 0.20594,
    "h": 277.6
  },
  "luminance": 0.05149
}

Semantic roles & 50–950 ramp

primary

#3723B0

secondary

#BAC867

accent

#EA3ED1

background

#F8F6FC

surface

#F0EBF8

border

#CBC6D1

text

#0C0513

muted

#7D7A82

Preview Lab

Preview with #3723B0

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

Preview Lab → · Contrast checker → · Palette generator →