#3779E0#3779E0

#3779E0 is a mid, vivid blue. Relative luminance 0.199; OKLCH L 58.8% C 0.171 H 259.2°. Best body text is #000000 at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#3779E0
RGB	rgb(55, 121, 224)
HSL	hsl(217, 73%, 55%)
HSV	hsv(217, 75%, 88%)
CMYK	cmyk(75.4%, 46%, 0%, 12.2%)
CIE-LAB	lab(51.69, 14.61, -58.50)
CIE-LCH	lch(51.69, 60.29, 284.02°)
OKLab	oklab(58.8% -0.0321 -0.1678)
OKLCH	oklch(58.8% 0.171 259.2)
XYZ	xyz(21.8626, 19.8663, 73.1889)
Luminance	0.1987 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3779E0 #E09E37

analogous

#37CEE0 #3779E0 #4A37E0

triadic

#3779E0 #E03779 #79E037

tetradic

#3779E0 #E037CE #E09E37 #37E04A

square

#3779E0 #E037CE #E09E37 #37E04A

split-complementary

#3779E0 #E04A37 #CEE037

monochromatic

#154288 #1D5BBD #3779E0 #6C9DE8 #A1C0F0

Accessibility & contrast

On white

4.22

#3779E0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.97

#3779E0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3779E0

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3779E0	#FFFFFF	#000000	##000000
##3779E0	1.00	4.22	4.97	4.97
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.97	21.00	1.00	1.00
##000000	4.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4283E4

Deuteranopia (green-blind)

#1774DE

Tritanopia (blue-blind)

#0091A2

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3779e0;
/* rgb */ color: rgb(55, 121, 224);
/* oklch */ color: oklch(58.8% 0.171 259.2);

Tailwind

colors: {
  custom: {
    50: '#859fea',
    500: '#3779e0',
    950: '#000000',
  },
}

SCSS

$custom: #3779e0;
$custom-light: #859fea;
$custom-dark: #000000;

JSON

{
  "hex": "#3779e0",
  "rgb": {
    "r": 55,
    "g": 121,
    "b": 224
  },
  "hsl": {
    "h": 216.568,
    "s": 73.16,
    "l": 54.706
  },
  "oklch": {
    "l": 0.58801,
    "c": 0.17089,
    "h": 259.2
  },
  "luminance": 0.19869
}

Semantic roles & 50–950 ramp

primary

#3779E0

secondary

#DDC196

accent

#A838F0

background

#F8F9FE

surface

#F0F2FD

border

#CBCCD5

text

#0D0E16

muted

#7D7E84

Preview Lab

Preview with #3779E0

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

Preview Lab → · Contrast checker → · Palette generator →