#3F79BD#3F79BD

#3F79BD is a mid, vivid cyan. Relative luminance 0.184; OKLCH L 56.9% C 0.122 H 253.8°. Best body text is #000000 at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#3F79BD
RGB	rgb(63, 121, 189)
HSL	hsl(212, 50%, 49%)
HSV	hsv(212, 67%, 74%)
CMYK	cmyk(66.7%, 36%, 0%, 25.9%)
CIE-LAB	lab(49.98, 3.09, -41.29)
CIE-LCH	lch(49.98, 41.41, 274.28°)
OKLab	oklab(56.92% -0.0339 -0.1172)
OKLCH	oklch(56.92% 0.122 253.8)
XYZ	xyz(18.0692, 18.4038, 50.7343)
Luminance	0.1841 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F79BD #BD833F

analogous

#3FB8BD #3F79BD #443FBD

triadic

#3F79BD #BD3F79 #79BD3F

tetradic

#3F79BD #BD3FB8 #BD833F #3FBD44

square

#3F79BD #BD3FB8 #BD833F #3FBD44

split-complementary

#3F79BD #BD443F #B8BD3F

monochromatic

#203E61 #305C8F #3F79BD #6B99CE #99B9DD

Accessibility & contrast

On white

4.49

#3F79BD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.68

#3F79BD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F79BD

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F79BD	#FFFFFF	#000000	##000000
##3F79BD	1.00	4.49	4.68	4.68
#FFFFFF	4.49	1.00	21.00	21.00
#000000	4.68	21.00	1.00	1.00
##000000	4.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B7DC0

Deuteranopia (green-blind)

#4971BC

Tritanopia (blue-blind)

#008992

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3f79bd;
/* rgb */ color: rgb(63, 121, 189);
/* oklch */ color: oklch(56.9% 0.122 253.8);

Tailwind

colors: {
  custom: {
    50: '#819fd1',
    500: '#3f79bd',
    950: '#000000',
  },
}

SCSS

$custom: #3f79bd;
$custom-light: #819fd1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f79bd",
  "rgb": {
    "r": 63,
    "g": 121,
    "b": 189
  },
  "hsl": {
    "h": 212.381,
    "s": 50,
    "l": 49.412
  },
  "oklch": {
    "l": 0.56915,
    "c": 0.12204,
    "h": 253.8
  },
  "luminance": 0.18406
}

Semantic roles & 50–950 ramp

primary

#3F79BD

secondary

#C9AE8F

accent

#994EDA

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3F79BD

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

Preview Lab → · Contrast checker → · Palette generator →