#3723B3#3723B3

#3723B3 is a dark, highly saturated blue. Relative luminance 0.053; OKLCH L 39.8% C 0.209 H 277.3°. Best body text is #FFFFFF at 10.22:1 contrast (WCAG AA passes).

Color values

HEX	#3723B3
RGB	rgb(55, 35, 179)
HSL	hsl(248, 67%, 42%)
HSV	hsv(248, 80%, 70%)
CMYK	cmyk(69.3%, 80.4%, 0%, 29.8%)
CIE-LAB	lab(27.48, 51.03, -71.89)
CIE-LCH	lch(27.48, 88.16, 305.37°)
OKLab	oklab(39.76% 0.0266 -0.2077)
OKLCH	oklch(39.76% 0.209 277.3)
XYZ	xyz(10.3106, 5.2680, 43.1126)
Luminance	0.0527 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3723B3 #9FB323

analogous

#2357B3 #3723B3 #7F23B3

triadic

#3723B3 #B33723 #23B337

tetradic

#3723B3 #B32357 #9FB323 #23B37F

square

#3723B3 #B32357 #9FB323 #23B37F

split-complementary

#3723B3 #B37F23 #57B323

monochromatic

#180F4D #271980 #3723B3 #513BD9 #7E6EE3

Accessibility & contrast

On white

10.22

#3723B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#3723B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3723B3

10.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3723B3	#FFFFFF	#000000	##FFFFFF
##3723B3	1.00	10.22	2.05	10.22
#FFFFFF	10.22	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047B7

Deuteranopia (green-blind)

#003BB1

Tritanopia (blue-blind)

#004F6C

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #3723b3;
/* rgb */ color: rgb(55, 35, 179);
/* oklch */ color: oklch(39.8% 0.209 277.3);

Tailwind

colors: {
  custom: {
    50: '#8163cb',
    500: '#3723b3',
    950: '#000000',
  },
}

SCSS

$custom: #3723b3;
$custom-light: #8163cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3723b3",
  "rgb": {
    "r": 55,
    "g": 35,
    "b": 179
  },
  "hsl": {
    "h": 248.333,
    "s": 67.29,
    "l": 41.961
  },
  "oklch": {
    "l": 0.39761,
    "c": 0.20941,
    "h": 277.3
  },
  "luminance": 0.05269
}

Semantic roles & 50–950 ramp

primary

#3723B3

secondary

#BCC969

accent

#EA3ED2

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0513

muted

#7D7A82

Preview Lab

Preview with #3723B3

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

Preview Lab → · Contrast checker → · Palette generator →