#3F79BF#3F79BF

#3F79BF is a mid, vivid cyan. Relative luminance 0.185; OKLCH L 57.0% C 0.125 H 254.4°. Best body text is #000000 at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#3F79BF
RGB	rgb(63, 121, 191)
HSL	hsl(213, 50%, 50%)
HSV	hsv(213, 67%, 75%)
CMYK	cmyk(67%, 36.6%, 0%, 25.1%)
CIE-LAB	lab(50.09, 3.80, -42.27)
CIE-LCH	lch(50.09, 42.44, 275.13°)
OKLab	oklab(57.03% -0.0334 -0.1201)
OKLCH	oklch(57.03% 0.125 254.4)
XYZ	xyz(18.2878, 18.4912, 51.8855)
Luminance	0.1849 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F79BF #BF853F

analogous

#3FB9BF #3F79BF #453FBF

triadic

#3F79BF #BF3F79 #79BF3F

tetradic

#3F79BF #BF3FB9 #BF853F #3FBF45

square

#3F79BF #BF3FB9 #BF853F #3FBF45

split-complementary

#3F79BF #BF453F #B9BF3F

monochromatic

#213F63 #305C91 #3F79BF #6D99CF #9BB9DE

Accessibility & contrast

On white

4.47

#3F79BF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.70

#3F79BF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F79BF

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F79BF	#FFFFFF	#000000	##000000
##3F79BF	1.00	4.47	4.70	4.70
#FFFFFF	4.47	1.00	21.00	21.00
#000000	4.70	21.00	1.00	1.00
##000000	4.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A7EC2

Deuteranopia (green-blind)

#4872BE

Tritanopia (blue-blind)

#008993

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3f79bf;
/* rgb */ color: rgb(63, 121, 191);
/* oklch */ color: oklch(57.0% 0.125 254.4);

Tailwind

colors: {
  custom: {
    50: '#819fd2',
    500: '#3f79bf',
    950: '#000000',
  },
}

SCSS

$custom: #3f79bf;
$custom-light: #819fd2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f79bf",
  "rgb": {
    "r": 63,
    "g": 121,
    "b": 191
  },
  "hsl": {
    "h": 212.813,
    "s": 50.394,
    "l": 49.804
  },
  "oklch": {
    "l": 0.57031,
    "c": 0.12467,
    "h": 254.4
  },
  "luminance": 0.18493
}

Semantic roles & 50–950 ramp

primary

#3F79BF

secondary

#CAB090

accent

#9A4EDA

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3F79BF

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

Preview Lab → · Contrast checker → · Palette generator →