#3979D7#3979D7

#3979D7 is a mid, vivid blue. Relative luminance 0.195; OKLCH L 58.3% C 0.158 H 258.2°. Best body text is #000000 at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#3979D7
RGB	rgb(57, 121, 215)
HSL	hsl(216, 66%, 53%)
HSV	hsv(216, 73%, 84%)
CMYK	cmyk(73.5%, 43.7%, 0%, 15.7%)
CIE-LAB	lab(51.21, 11.55, -54.18)
CIE-LCH	lch(51.21, 55.40, 282.04°)
OKLab	oklab(58.28% -0.0324 -0.1551)
OKLCH	oklch(58.28% 0.158 258.2)
XYZ	xyz(20.7860, 19.4486, 66.9353)
Luminance	0.1945 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3979D7 #D79739

analogous

#39C8D7 #3979D7 #4839D7

triadic

#3979D7 #D73979 #79D739

tetradic

#3979D7 #D739C8 #D79739 #39D748

square

#3979D7 #D739C8 #D79739 #39D748

split-complementary

#3979D7 #D74839 #C8D739

monochromatic

#19417C #235CAF #3979D7 #6C9BE1 #9FBEEC

Accessibility & contrast

On white

4.29

#3979D7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.89

#3979D7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3979D7

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3979D7	#FFFFFF	#000000	##000000
##3979D7	1.00	4.29	4.89	4.89
#FFFFFF	4.29	1.00	21.00	21.00
#000000	4.89	21.00	1.00	1.00
##000000	4.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A82DB

Deuteranopia (green-blind)

#2C73D5

Tritanopia (blue-blind)

#008F9D

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3979d7;
/* rgb */ color: rgb(57, 121, 215);
/* oklch */ color: oklch(58.3% 0.158 258.2);

Tailwind

colors: {
  custom: {
    50: '#839fe4',
    500: '#3979d7',
    950: '#000000',
  },
}

SCSS

$custom: #3979d7;
$custom-light: #839fe4;
$custom-dark: #000000;

JSON

{
  "hex": "#3979d7",
  "rgb": {
    "r": 57,
    "g": 121,
    "b": 215
  },
  "hsl": {
    "h": 215.696,
    "s": 66.387,
    "l": 53.333
  },
  "oklch": {
    "l": 0.58276,
    "c": 0.15847,
    "h": 258.2
  },
  "luminance": 0.19451
}

Semantic roles & 50–950 ramp

primary

#3979D7

secondary

#D8BC94

accent

#A43EE9

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0C0E15

muted

#7D7E84

Preview Lab

Preview with #3979D7

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

Preview Lab → · Contrast checker → · Palette generator →