#3979D1#3979D1

#3979D1 is a mid, vivid cyan. Relative luminance 0.191; OKLCH L 57.9% C 0.151 H 257.1°. Best body text is #000000 at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#3979D1
RGB	rgb(57, 121, 209)
HSL	hsl(215, 62%, 52%)
HSV	hsv(215, 73%, 82%)
CMYK	cmyk(72.7%, 42.1%, 0%, 18%)
CIE-LAB	lab(50.86, 9.36, -51.34)
CIE-LCH	lch(50.86, 52.19, 280.33°)
OKLab	oklab(57.89% -0.0336 -0.1468)
OKLCH	oklch(57.89% 0.151 257.1)
XYZ	xyz(20.0291, 19.1458, 62.9492)
Luminance	0.1915 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3979D1 #D19139

analogous

#39C5D1 #3979D1 #4539D1

triadic

#3979D1 #D13979 #79D139

tetradic

#3979D1 #D139C5 #D19139 #39D145

square

#3979D1 #D139C5 #D19139 #39D145

split-complementary

#3979D1 #D14539 #C5D139

monochromatic

#1B4175 #275CA6 #3979D1 #6B9BDD #9CBCE8

Accessibility & contrast

On white

4.35

#3979D1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.83

#3979D1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3979D1

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3979D1	#FFFFFF	#000000	##000000
##3979D1	1.00	4.35	4.83	4.83
#FFFFFF	4.35	1.00	21.00	21.00
#000000	4.83	21.00	1.00	1.00
##000000	4.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E81D4

Deuteranopia (green-blind)

#3473CF

Tritanopia (blue-blind)

#008E9B

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3979d1;
/* rgb */ color: rgb(57, 121, 209);
/* oklch */ color: oklch(57.9% 0.151 257.1);

Tailwind

colors: {
  custom: {
    50: '#829fdf',
    500: '#3979d1',
    950: '#000000',
  },
}

SCSS

$custom: #3979d1;
$custom-light: #829fdf;
$custom-dark: #000000;

JSON

{
  "hex": "#3979d1",
  "rgb": {
    "r": 57,
    "g": 121,
    "b": 209
  },
  "hsl": {
    "h": 214.737,
    "s": 62.295,
    "l": 52.157
  },
  "oklch": {
    "l": 0.57891,
    "c": 0.15056,
    "h": 257.1
  },
  "luminance": 0.19148
}

Semantic roles & 50–950 ramp

primary

#3979D1

secondary

#D4B892

accent

#A142E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3979D1

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

Preview Lab → · Contrast checker → · Palette generator →