#3779DE#3779DE

#3779DE is a mid, vivid blue. Relative luminance 0.198; OKLCH L 58.7% C 0.168 H 258.9°. Best body text is #000000 at 4.95:1 contrast (WCAG AA passes).

Color values

HEX	#3779DE
RGB	rgb(55, 121, 222)
HSL	hsl(216, 72%, 54%)
HSV	hsv(216, 75%, 87%)
CMYK	cmyk(75.2%, 45.5%, 0%, 12.9%)
CIE-LAB	lab(51.56, 13.87, -57.57)
CIE-LCH	lch(51.56, 59.22, 283.55°)
OKLab	oklab(58.67% -0.0325 -0.1651)
OKLCH	oklch(58.67% 0.168 258.9)
XYZ	xyz(21.5929, 19.7584, 71.7688)
Luminance	0.1976 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3779DE #DE9C37

analogous

#37CDDE #3779DE #4837DE

triadic

#3779DE #DE3779 #79DE37

tetradic

#3779DE #DE37CD #DE9C37 #37DE48

square

#3779DE #DE37CD #DE9C37 #37DE48

split-complementary

#3779DE #DE4837 #CDDE37

monochromatic

#164285 #1F5CB9 #3779DE #6C9CE7 #A0BFEF

Accessibility & contrast

On white

4.24

#3779DE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.95

#3779DE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3779DE

4.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3779DE	#FFFFFF	#000000	##000000
##3779DE	1.00	4.24	4.95	4.95
#FFFFFF	4.24	1.00	21.00	21.00
#000000	4.95	21.00	1.00	1.00
##000000	4.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4483E2

Deuteranopia (green-blind)

#1D74DC

Tritanopia (blue-blind)

#0091A1

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3779de;
/* rgb */ color: rgb(55, 121, 222);
/* oklch */ color: oklch(58.7% 0.168 258.9);

Tailwind

colors: {
  custom: {
    50: '#849fe9',
    500: '#3779de',
    950: '#000000',
  },
}

SCSS

$custom: #3779de;
$custom-light: #849fe9;
$custom-dark: #000000;

JSON

{
  "hex": "#3779de",
  "rgb": {
    "r": 55,
    "g": 121,
    "b": 222
  },
  "hsl": {
    "h": 216.287,
    "s": 71.674,
    "l": 54.314
  },
  "oklch": {
    "l": 0.58667,
    "c": 0.16826,
    "h": 258.9
  },
  "luminance": 0.19761
}

Semantic roles & 50–950 ramp

primary

#3779DE

secondary

#DCC095

accent

#A739EE

background

#F8F9FE

surface

#F0F2FD

border

#CBCCD5

text

#0C0E16

muted

#7D7E84

Preview Lab

Preview with #3779DE

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

Preview Lab → · Contrast checker → · Palette generator →