#3F79CE#3F79CE

#3F79CE is a mid, vivid blue. Relative luminance 0.192; OKLCH L 57.9% C 0.145 H 258.0°. Best body text is #000000 at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#3F79CE
RGB	rgb(63, 121, 206)
HSL	hsl(216, 59%, 53%)
HSV	hsv(216, 69%, 81%)
CMYK	cmyk(69.4%, 41.3%, 0%, 19.2%)
CIE-LAB	lab(50.90, 9.14, -49.55)
CIE-LCH	lch(50.90, 50.38, 280.45°)
OKLab	oklab(57.93% -0.03 -0.1414)
OKLCH	oklch(57.93% 0.145 258)
XYZ	xyz(20.0238, 19.1856, 61.0285)
Luminance	0.1919 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F79CE #CE943F

analogous

#3FC1CE #3F79CE #4C3FCE

triadic

#3F79CE #CE3F79 #79CE3F

tetradic

#3F79CE #CE3FC1 #CE943F #3FCE4C

square

#3F79CE #CE3FC1 #CE943F #3FCE4C

split-complementary

#3F79CE #CE4C3F #C1CE3F

monochromatic

#1E4175 #2A5CA6 #3F79CE #709BDA #A1BDE7

Accessibility & contrast

On white

4.34

#3F79CE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.84

#3F79CE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F79CE

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F79CE	#FFFFFF	#000000	##000000
##3F79CE	1.00	4.34	4.84	4.84
#FFFFFF	4.34	1.00	21.00	21.00
#000000	4.84	21.00	1.00	1.00
##000000	4.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5180D1

Deuteranopia (green-blind)

#3A73CC

Tritanopia (blue-blind)

#008D99

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3f79ce;
/* rgb */ color: rgb(63, 121, 206);
/* oklch */ color: oklch(57.9% 0.145 258.0);

Tailwind

colors: {
  custom: {
    50: '#849fdd',
    500: '#3f79ce',
    950: '#000000',
  },
}

SCSS

$custom: #3f79ce;
$custom-light: #849fdd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f79ce",
  "rgb": {
    "r": 63,
    "g": 121,
    "b": 206
  },
  "hsl": {
    "h": 215.664,
    "s": 59.336,
    "l": 52.745
  },
  "oklch": {
    "l": 0.57933,
    "c": 0.14456,
    "h": 258
  },
  "luminance": 0.19188
}

Semantic roles & 50–950 ramp

primary

#3F79CE

secondary

#D3BA95

accent

#A345E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3F79CE

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

Preview Lab → · Contrast checker → · Palette generator →