#3F79B2#3F79B2

#3F79B2 is a mid, moderate cyan. Relative luminance 0.179; OKLCH L 56.3% C 0.108 H 249.9°. Best body text is #000000 at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#3F79B2
RGB	rgb(63, 121, 178)
HSL	hsl(210, 48%, 47%)
HSV	hsv(210, 65%, 70%)
CMYK	cmyk(64.6%, 32%, 0%, 30.2%)
CIE-LAB	lab(49.43, -0.75, -35.82)
CIE-LCH	lch(49.43, 35.82, 268.80°)
OKLab	oklab(56.3% -0.037 -0.1013)
OKLCH	oklch(56.3% 0.108 249.9)
XYZ	xyz(16.9202, 17.9442, 44.6827)
Luminance	0.1795 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F79B2 #B2783F

analogous

#3FB2B2 #3F79B2 #3F40B2

triadic

#3F79B2 #B23F79 #79B23F

tetradic

#3F79B2 #B23FB2 #B2783F #40B23F

square

#3F79B2 #B23FB2 #B2783F #40B23F

split-complementary

#3F79B2 #B23F40 #B2B23F

monochromatic

#1F3C58 #2F5A85 #3F79B2 #6698C9 #93B6D9

Accessibility & contrast

On white

4.58

#3F79B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.59

#3F79B2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F79B2

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F79B2	#FFFFFF	#000000	##000000
##3F79B2	1.00	4.58	4.59	4.59
#FFFFFF	4.58	1.00	21.00	21.00
#000000	4.59	21.00	1.00	1.00
##000000	4.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#607CB4

Deuteranopia (green-blind)

#5171B1

Tritanopia (blue-blind)

#00868D

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3f79b2;
/* rgb */ color: rgb(63, 121, 178);
/* oklch */ color: oklch(56.3% 0.108 249.9);

Tailwind

colors: {
  custom: {
    50: '#7f9fc9',
    500: '#3f79b2',
    950: '#000000',
  },
}

SCSS

$custom: #3f79b2;
$custom-light: #7f9fc9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f79b2",
  "rgb": {
    "r": 63,
    "g": 121,
    "b": 178
  },
  "hsl": {
    "h": 209.739,
    "s": 47.718,
    "l": 47.255
  },
  "oklch": {
    "l": 0.563,
    "c": 0.10779,
    "h": 249.9
  },
  "luminance": 0.17946
}

Semantic roles & 50–950 ramp

primary

#3F79B2

secondary

#C4A689

accent

#9350D7

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3F79B2

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

Preview Lab → · Contrast checker → · Palette generator →