#3F79BE#3F79BE

#3F79BE is a mid, vivid cyan. Relative luminance 0.184; OKLCH L 57.0% C 0.123 H 254.1°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#3F79BE
RGB	rgb(63, 121, 190)
HSL	hsl(213, 50%, 50%)
HSV	hsv(213, 67%, 75%)
CMYK	cmyk(66.8%, 36.3%, 0%, 25.5%)
CIE-LAB	lab(50.03, 3.45, -41.78)
CIE-LCH	lch(50.03, 41.92, 274.71°)
OKLab	oklab(56.97% -0.0337 -0.1187)
OKLCH	oklch(56.97% 0.123 254.1)
XYZ	xyz(18.1781, 18.4474, 51.3079)
Luminance	0.1845 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F79BE #BE843F

analogous

#3FB9BE #3F79BE #443FBE

triadic

#3F79BE #BE3F79 #79BE3F

tetradic

#3F79BE #BE3FB9 #BE843F #3FBE44

square

#3F79BE #BE3FB9 #BE843F #3FBE44

split-complementary

#3F79BE #BE443F #B9BE3F

monochromatic

#213E62 #305C90 #3F79BE #6C99CE #9AB9DD

Accessibility & contrast

On white

4.48

#3F79BE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#3F79BE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F79BE

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F79BE	#FFFFFF	#000000	##000000
##3F79BE	1.00	4.48	4.69	4.69
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.69	21.00	1.00	1.00
##000000	4.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A7EC1

Deuteranopia (green-blind)

#4872BD

Tritanopia (blue-blind)

#008992

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3f79be;
/* rgb */ color: rgb(63, 121, 190);
/* oklch */ color: oklch(57.0% 0.123 254.1);

Tailwind

colors: {
  custom: {
    50: '#819fd2',
    500: '#3f79be',
    950: '#000000',
  },
}

SCSS

$custom: #3f79be;
$custom-light: #819fd2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f79be",
  "rgb": {
    "r": 63,
    "g": 121,
    "b": 190
  },
  "hsl": {
    "h": 212.598,
    "s": 50.198,
    "l": 49.608
  },
  "oklch": {
    "l": 0.56973,
    "c": 0.12335,
    "h": 254.1
  },
  "luminance": 0.18449
}

Semantic roles & 50–950 ramp

primary

#3F79BE

secondary

#C9AF8F

accent

#9A4EDA

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3F79BE

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

Preview Lab → · Contrast checker → · Palette generator →