#3F79B9#3F79B9

#3F79B9 is a mid, moderate cyan. Relative luminance 0.182; OKLCH L 56.7% C 0.117 H 252.6°. Best body text is #000000 at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#3F79B9
RGB	rgb(63, 121, 185)
HSL	hsl(211, 49%, 49%)
HSV	hsv(211, 66%, 73%)
CMYK	cmyk(65.9%, 34.6%, 0%, 27.5%)
CIE-LAB	lab(49.78, 1.69, -39.31)
CIE-LCH	lch(49.78, 39.35, 272.46°)
OKLab	oklab(56.69% -0.035 -0.1114)
OKLCH	oklch(56.69% 0.117 252.6)
XYZ	xyz(17.6410, 18.2325, 48.4791)
Luminance	0.1823 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F79B9 #B97F3F

analogous

#3FB6B9 #3F79B9 #423FB9

triadic

#3F79B9 #B93F79 #79B93F

tetradic

#3F79B9 #B93FB6 #B97F3F #3FB942

square

#3F79B9 #B93FB6 #B97F3F #3FB942

split-complementary

#3F79B9 #B9423F #B6B93F

monochromatic

#203D5E #2F5B8B #3F79B9 #6998CC #97B8DC

Accessibility & contrast

On white

4.52

#3F79B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.65

#3F79B9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F79B9

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F79B9	#FFFFFF	#000000	##000000
##3F79B9	1.00	4.52	4.65	4.65
#FFFFFF	4.52	1.00	21.00	21.00
#000000	4.65	21.00	1.00	1.00
##000000	4.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D7DBC

Deuteranopia (green-blind)

#4C71B8

Tritanopia (blue-blind)

#008890

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3f79b9;
/* rgb */ color: rgb(63, 121, 185);
/* oklch */ color: oklch(56.7% 0.117 252.6);

Tailwind

colors: {
  custom: {
    50: '#809fce',
    500: '#3f79b9',
    950: '#000000',
  },
}

SCSS

$custom: #3f79b9;
$custom-light: #809fce;
$custom-dark: #000000;

JSON

{
  "hex": "#3f79b9",
  "rgb": {
    "r": 63,
    "g": 121,
    "b": 185
  },
  "hsl": {
    "h": 211.475,
    "s": 49.194,
    "l": 48.627
  },
  "oklch": {
    "l": 0.56688,
    "c": 0.11681,
    "h": 252.6
  },
  "luminance": 0.18234
}

Semantic roles & 50–950 ramp

primary

#3F79B9

secondary

#C7AB8D

accent

#974FD9

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3F79B9

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

Preview Lab → · Contrast checker → · Palette generator →