#3979DE#3979DE

#3979DE is a mid, vivid blue. Relative luminance 0.198; OKLCH L 58.7% C 0.168 H 259.3°. Best body text is #000000 at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#3979DE
RGB	rgb(57, 121, 222)
HSL	hsl(217, 71%, 55%)
HSV	hsv(217, 74%, 87%)
CMYK	cmyk(74.3%, 45.5%, 0%, 12.9%)
CIE-LAB	lab(51.63, 14.11, -57.46)
CIE-LCH	lch(51.63, 59.17, 283.80°)
OKLab	oklab(58.74% -0.0312 -0.1648)
OKLCH	oklch(58.74% 0.168 259.3)
XYZ	xyz(21.7047, 19.8161, 71.7741)
Luminance	0.1982 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3979DE #DE9E39

analogous

#39CCDE #3979DE #4B39DE

triadic

#3979DE #DE3979 #79DE39

tetradic

#3979DE #DE39CC #DE9E39 #39DE4B

square

#3979DE #DE39CC #DE9E39 #39DE4B

split-complementary

#3979DE #DE4B39 #CCDE39

monochromatic

#164286 #1F5BBB #3979DE #6D9DE7 #A2C0EF

Accessibility & contrast

On white

4.23

#3979DE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.96

#3979DE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3979DE

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3979DE	#FFFFFF	#000000	##000000
##3979DE	1.00	4.23	4.96	4.96
#FFFFFF	4.23	1.00	21.00	21.00
#000000	4.96	21.00	1.00	1.00
##000000	4.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4483E2

Deuteranopia (green-blind)

#1E74DC

Tritanopia (blue-blind)

#0091A1

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3979de;
/* rgb */ color: rgb(57, 121, 222);
/* oklch */ color: oklch(58.7% 0.168 259.3);

Tailwind

colors: {
  custom: {
    50: '#859fe9',
    500: '#3979de',
    950: '#000000',
  },
}

SCSS

$custom: #3979de;
$custom-light: #859fe9;
$custom-dark: #000000;

JSON

{
  "hex": "#3979de",
  "rgb": {
    "r": 57,
    "g": 121,
    "b": 222
  },
  "hsl": {
    "h": 216.727,
    "s": 71.429,
    "l": 54.706
  },
  "oklch": {
    "l": 0.58736,
    "c": 0.16768,
    "h": 259.3
  },
  "luminance": 0.19819
}

Semantic roles & 50–950 ramp

primary

#3979DE

secondary

#DCC197

accent

#A83AEE

background

#F8F9FE

surface

#F0F2FD

border

#CBCCD5

text

#0D0E16

muted

#7D7E84

Preview Lab

Preview with #3979DE

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

Preview Lab → · Contrast checker → · Palette generator →