#3F76C7#3F76C7

#3F76C7 is a mid, vivid blue. Relative luminance 0.181; OKLCH L 56.8% C 0.139 H 258.1°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#3F76C7
RGB	rgb(63, 118, 199)
HSL	hsl(216, 55%, 51%)
HSV	hsv(216, 68%, 78%)
CMYK	cmyk(68.3%, 40.7%, 0%, 22%)
CIE-LAB	lab(49.66, 8.48, -47.54)
CIE-LCH	lch(49.66, 48.29, 280.12°)
OKLab	oklab(56.84% -0.0286 -0.1356)
OKLCH	oklch(56.84% 0.139 258.1)
XYZ	xyz(18.8334, 18.1352, 56.5297)
Luminance	0.1814 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F76C7 #C7903F

analogous

#3FBAC7 #3F76C7 #4C3FC7

triadic

#3F76C7 #C73F76 #76C73F

tetradic

#3F76C7 #C73FBA #C7903F #3FC74C

square

#3F76C7 #C73FBA #C7903F #3FC74C

split-complementary

#3F76C7 #C74C3F #BAC73F

monochromatic

#203E6C #2D5A9B #3F76C7 #6E98D5 #9EBAE3

Accessibility & contrast

On white

4.54

#3F76C7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.63

#3F76C7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F76C7

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F76C7	#FFFFFF	#000000	##000000
##3F76C7	1.00	4.54	4.63	4.63
#FFFFFF	4.54	1.00	21.00	21.00
#000000	4.63	21.00	1.00	1.00
##000000	4.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#517DCA

Deuteranopia (green-blind)

#3B70C5

Tritanopia (blue-blind)

#008995

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3f76c7;
/* rgb */ color: rgb(63, 118, 199);
/* oklch */ color: oklch(56.8% 0.139 258.1);

Tailwind

colors: {
  custom: {
    50: '#839dd8',
    500: '#3f76c7',
    950: '#000000',
  },
}

SCSS

$custom: #3f76c7;
$custom-light: #839dd8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f76c7",
  "rgb": {
    "r": 63,
    "g": 118,
    "b": 199
  },
  "hsl": {
    "h": 215.735,
    "s": 54.839,
    "l": 51.373
  },
  "oklch": {
    "l": 0.5684,
    "c": 0.13855,
    "h": 258.1
  },
  "luminance": 0.18137
}

Semantic roles & 50–950 ramp

primary

#3F76C7

secondary

#CFB793

accent

#A24ADE

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0E14

muted

#7D7E83

Preview Lab

Preview with #3F76C7

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

Preview Lab → · Contrast checker → · Palette generator →