#3F79CD#3F79CD

#3F79CD is a mid, vivid blue. Relative luminance 0.191; OKLCH L 57.9% C 0.143 H 257.8°. Best body text is #000000 at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#3F79CD
RGB	rgb(63, 121, 205)
HSL	hsl(215, 59%, 53%)
HSV	hsv(215, 69%, 80%)
CMYK	cmyk(69.3%, 41%, 0%, 19.6%)
CIE-LAB	lab(50.85, 8.78, -49.07)
CIE-LCH	lch(50.85, 49.85, 280.14°)
OKLab	oklab(57.87% -0.0302 -0.14)
OKLCH	oklch(57.87% 0.143 257.8)
XYZ	xyz(19.9027, 19.1372, 60.3907)
Luminance	0.1914 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F79CD #CD933F

analogous

#3FC0CD #3F79CD #4C3FCD

triadic

#3F79CD #CD3F79 #79CD3F

tetradic

#3F79CD #CD3FC0 #CD933F #3FCD4C

square

#3F79CD #CD3FC0 #CD933F #3FCD4C

split-complementary

#3F79CD #CD4C3F #C0CD3F

monochromatic

#1E4174 #2B5CA4 #3F79CD #709BDA #A0BDE6

Accessibility & contrast

On white

4.35

#3F79CD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.83

#3F79CD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F79CD

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F79CD	#FFFFFF	#000000	##000000
##3F79CD	1.00	4.35	4.83	4.83
#FFFFFF	4.35	1.00	21.00	21.00
#000000	4.83	21.00	1.00	1.00
##000000	4.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5280D0

Deuteranopia (green-blind)

#3B73CB

Tritanopia (blue-blind)

#008C99

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3f79cd;
/* rgb */ color: rgb(63, 121, 205);
/* oklch */ color: oklch(57.9% 0.143 257.8);

Tailwind

colors: {
  custom: {
    50: '#849fdd',
    500: '#3f79cd',
    950: '#000000',
  },
}

SCSS

$custom: #3f79cd;
$custom-light: #849fdd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f79cd",
  "rgb": {
    "r": 63,
    "g": 121,
    "b": 205
  },
  "hsl": {
    "h": 215.493,
    "s": 58.678,
    "l": 52.549
  },
  "oklch": {
    "l": 0.57871,
    "c": 0.14323,
    "h": 257.8
  },
  "luminance": 0.19139
}

Semantic roles & 50–950 ramp

primary

#3F79CD

secondary

#D3BA95

accent

#A246E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3F79CD

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

Preview Lab → · Contrast checker → · Palette generator →