#3979CC#3979CC

#3979CC is a mid, vivid cyan. Relative luminance 0.189; OKLCH L 57.6% C 0.144 H 256.1°. Best body text is #000000 at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#3979CC
RGB	rgb(57, 121, 204)
HSL	hsl(214, 59%, 51%)
HSV	hsv(214, 72%, 80%)
CMYK	cmyk(72.1%, 40.7%, 0%, 20%)
CIE-LAB	lab(50.57, 7.54, -48.95)
CIE-LCH	lch(50.57, 49.53, 278.76°)
OKLab	oklab(57.58% -0.0346 -0.1398)
OKLCH	oklch(57.58% 0.144 256.1)
XYZ	xyz(19.4198, 18.9021, 59.7400)
Luminance	0.1890 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3979CC #CC8C39

analogous

#39C2CC #3979CC #4239CC

triadic

#3979CC #CC3979 #79CC39

tetradic

#3979CC #CC39C2 #CC8C39 #39CC42

square

#3979CC #CC39C2 #CC8C39 #39CC42

split-complementary

#3979CC #CC4239 #C2CC39

monochromatic

#1C406E #295C9F #3979CC #6A9AD9 #9ABBE5

Accessibility & contrast

On white

4.39

#3979CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.78

#3979CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3979CC

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3979CC	#FFFFFF	#000000	##000000
##3979CC	1.00	4.39	4.78	4.78
#FFFFFF	4.39	1.00	21.00	21.00
#000000	4.78	21.00	1.00	1.00
##000000	4.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5280CF

Deuteranopia (green-blind)

#3A72CA

Tritanopia (blue-blind)

#008C98

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3979cc;
/* rgb */ color: rgb(57, 121, 204);
/* oklch */ color: oklch(57.6% 0.144 256.1);

Tailwind

colors: {
  custom: {
    50: '#819fdc',
    500: '#3979cc',
    950: '#000000',
  },
}

SCSS

$custom: #3979cc;
$custom-light: #819fdc;
$custom-dark: #000000;

JSON

{
  "hex": "#3979cc",
  "rgb": {
    "r": 57,
    "g": 121,
    "b": 204
  },
  "hsl": {
    "h": 213.878,
    "s": 59.036,
    "l": 51.176
  },
  "oklch": {
    "l": 0.57578,
    "c": 0.14398,
    "h": 256.1
  },
  "luminance": 0.18904
}

Semantic roles & 50–950 ramp

primary

#3979CC

secondary

#D1B590

accent

#9E46E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3979CC

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

Preview Lab → · Contrast checker → · Palette generator →