#3F79C1#3F79C1

#3F79C1 is a mid, vivid cyan. Relative luminance 0.186; OKLCH L 57.1% C 0.127 H 255.0°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#3F79C1
RGB	rgb(63, 121, 193)
HSL	hsl(213, 51%, 50%)
HSV	hsv(213, 67%, 76%)
CMYK	cmyk(67.4%, 37.3%, 0%, 24.3%)
CIE-LAB	lab(50.19, 4.50, -43.25)
CIE-LCH	lch(50.19, 43.49, 275.95°)
OKLab	oklab(57.15% -0.0329 -0.123)
OKLCH	oklch(57.15% 0.127 255)
XYZ	xyz(18.5094, 18.5799, 53.0525)
Luminance	0.1858 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F79C1 #C1873F

analogous

#3FBAC1 #3F79C1 #463FC1

triadic

#3F79C1 #C13F79 #79C13F

tetradic

#3F79C1 #C13FBA #C1873F #3FC146

square

#3F79C1 #C13FBA #C1873F #3FC146

split-complementary

#3F79C1 #C1463F #BAC13F

monochromatic

#213F65 #305C93 #3F79C1 #6D99D0 #9CBADF

Accessibility & contrast

On white

4.45

#3F79C1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.72

#3F79C1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F79C1

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F79C1	#FFFFFF	#000000	##000000
##3F79C1	1.00	4.45	4.72	4.72
#FFFFFF	4.45	1.00	21.00	21.00
#000000	4.72	21.00	1.00	1.00
##000000	4.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#597EC4

Deuteranopia (green-blind)

#4672C0

Tritanopia (blue-blind)

#008A94

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3f79c1;
/* rgb */ color: rgb(63, 121, 193);
/* oklch */ color: oklch(57.1% 0.127 255.0);

Tailwind

colors: {
  custom: {
    50: '#829fd4',
    500: '#3f79c1',
    950: '#000000',
  },
}

SCSS

$custom: #3f79c1;
$custom-light: #829fd4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f79c1",
  "rgb": {
    "r": 63,
    "g": 121,
    "b": 193
  },
  "hsl": {
    "h": 213.231,
    "s": 51.181,
    "l": 50.196
  },
  "oklch": {
    "l": 0.57148,
    "c": 0.1273,
    "h": 255
  },
  "luminance": 0.18582
}

Semantic roles & 50–950 ramp

primary

#3F79C1

secondary

#CBB191

accent

#9C4DDB

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0E14

muted

#7D7E83

Preview Lab

Preview with #3F79C1

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

Preview Lab → · Contrast checker → · Palette generator →