#3F76D7#3F76D7

#3F76D7 is a mid, vivid blue. Relative luminance 0.189; OKLCH L 57.9% C 0.160 H 260.8°. Best body text is #000000 at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#3F76D7
RGB	rgb(63, 118, 215)
HSL	hsl(218, 66%, 55%)
HSV	hsv(218, 71%, 84%)
CMYK	cmyk(70.7%, 45.1%, 0%, 15.7%)
CIE-LAB	lab(50.59, 14.23, -55.16)
CIE-LCH	lch(50.59, 56.96, 284.47°)
OKLab	oklab(57.86% -0.0255 -0.1579)
OKLCH	oklch(57.86% 0.16 260.8)
XYZ	xyz(20.7897, 18.9177, 66.8326)
Luminance	0.1892 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F76D7 #D7A03F

analogous

#3FC2D7 #3F76D7 #543FD7

triadic

#3F76D7 #D73F76 #76D73F

tetradic

#3F76D7 #D73FC2 #D7A03F #3FD754

square

#3F76D7 #D73FC2 #D7A03F #3FD754

split-complementary

#3F76D7 #D7543F #C2D73F

monochromatic

#1B4081 #2559B3 #3F76D7 #729AE2 #A4BEEC

Accessibility & contrast

On white

4.39

#3F76D7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.78

#3F76D7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F76D7

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F76D7	#FFFFFF	#000000	##000000
##3F76D7	1.00	4.39	4.78	4.78
#FFFFFF	4.39	1.00	21.00	21.00
#000000	4.78	21.00	1.00	1.00
##000000	4.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4580DB

Deuteranopia (green-blind)

#2672D5

Tritanopia (blue-blind)

#008D9C

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3f76d7;
/* rgb */ color: rgb(63, 118, 215);
/* oklch */ color: oklch(57.9% 0.160 260.8);

Tailwind

colors: {
  custom: {
    50: '#869ce4',
    500: '#3f76d7',
    950: '#000000',
  },
}

SCSS

$custom: #3f76d7;
$custom-light: #869ce4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f76d7",
  "rgb": {
    "r": 63,
    "g": 118,
    "b": 215
  },
  "hsl": {
    "h": 218.289,
    "s": 65.517,
    "l": 54.51
  },
  "oklch": {
    "l": 0.57861,
    "c": 0.16,
    "h": 260.8
  },
  "luminance": 0.1892
}

Semantic roles & 50–950 ramp

primary

#3F76D7

secondary

#D9C299

accent

#AB3FE8

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0C0E15

muted

#7D7E84

Preview Lab

Preview with #3F76D7

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

Preview Lab → · Contrast checker → · Palette generator →