#3979C9#3979C9

#3979C9 is a mid, vivid cyan. Relative luminance 0.188; OKLCH L 57.4% C 0.140 H 255.4°. Best body text is #000000 at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#3979C9
RGB	rgb(57, 121, 201)
HSL	hsl(213, 57%, 51%)
HSV	hsv(213, 72%, 79%)
CMYK	cmyk(71.6%, 39.8%, 0%, 21.2%)
CIE-LAB	lab(50.40, 6.45, -47.51)
CIE-LCH	lch(50.40, 47.94, 277.73°)
OKLab	oklab(57.39% -0.0353 -0.1355)
OKLCH	oklch(57.39% 0.14 255.4)
XYZ	xyz(19.0635, 18.7596, 57.8633)
Luminance	0.1876 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3979C9 #C98939

analogous

#39C1C9 #3979C9 #4139C9

triadic

#3979C9 #C93979 #79C939

tetradic

#3979C9 #C939C1 #C98939 #39C941

square

#3979C9 #C939C1 #C98939 #39C941

split-complementary

#3979C9 #C94139 #C1C939

monochromatic

#1D3F6B #2A5C9B #3979C9 #699AD6 #99BAE3

Accessibility & contrast

On white

4.42

#3979C9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.75

#3979C9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3979C9

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3979C9	#FFFFFF	#000000	##000000
##3979C9	1.00	4.42	4.75	4.75
#FFFFFF	4.42	1.00	21.00	21.00
#000000	4.75	21.00	1.00	1.00
##000000	4.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#547FCC

Deuteranopia (green-blind)

#3D72C7

Tritanopia (blue-blind)

#008C97

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3979c9;
/* rgb */ color: rgb(57, 121, 201);
/* oklch */ color: oklch(57.4% 0.140 255.4);

Tailwind

colors: {
  custom: {
    50: '#819fda',
    500: '#3979c9',
    950: '#000000',
  },
}

SCSS

$custom: #3979c9;
$custom-light: #819fda;
$custom-dark: #000000;

JSON

{
  "hex": "#3979c9",
  "rgb": {
    "r": 57,
    "g": 121,
    "b": 201
  },
  "hsl": {
    "h": 213.333,
    "s": 57.143,
    "l": 50.588
  },
  "oklch": {
    "l": 0.57393,
    "c": 0.14003,
    "h": 255.4
  },
  "luminance": 0.18762
}

Semantic roles & 50–950 ramp

primary

#3979C9

secondary

#CFB28F

accent

#9C47E0

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3979C9

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

Preview Lab → · Contrast checker → · Palette generator →