#3F7AD1#3F7AD1

#3F7AD1 is a mid, vivid blue. Relative luminance 0.196; OKLCH L 58.3% C 0.147 H 258.1°. Best body text is #000000 at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#3F7AD1
RGB	rgb(63, 122, 209)
HSL	hsl(216, 61%, 53%)
HSV	hsv(216, 70%, 82%)
CMYK	cmyk(69.9%, 41.6%, 0%, 18%)
CIE-LAB	lab(51.36, 9.59, -50.53)
CIE-LCH	lch(51.36, 51.44, 280.75°)
OKLab	oklab(58.34% -0.0303 -0.1443)
OKLCH	oklch(58.34% 0.147 258.1)
XYZ	xyz(20.5139, 19.5771, 63.0069)
Luminance	0.1958 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7AD1 #D1963F

analogous

#3FC3D1 #3F7AD1 #4D3FD1

triadic

#3F7AD1 #D13F7A #7AD13F

tetradic

#3F7AD1 #D13FC3 #D1963F #3FD14D

square

#3F7AD1 #D13FC3 #D1963F #3FD14D

split-complementary

#3F7AD1 #D14D3F #C3D13F

monochromatic

#1D4279 #295DAA #3F7AD1 #709CDD #A2BEE9

Accessibility & contrast

On white

4.27

#3F7AD1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.92

#3F7AD1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7AD1

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7AD1	#FFFFFF	#000000	##000000
##3F7AD1	1.00	4.27	4.92	4.92
#FFFFFF	4.27	1.00	21.00	21.00
#000000	4.92	21.00	1.00	1.00
##000000	4.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5182D4

Deuteranopia (green-blind)

#3974CF

Tritanopia (blue-blind)

#008E9B

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3f7ad1;
/* rgb */ color: rgb(63, 122, 209);
/* oklch */ color: oklch(58.3% 0.147 258.1);

Tailwind

colors: {
  custom: {
    50: '#859fdf',
    500: '#3f7ad1',
    950: '#000000',
  },
}

SCSS

$custom: #3f7ad1;
$custom-light: #859fdf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7ad1",
  "rgb": {
    "r": 63,
    "g": 122,
    "b": 209
  },
  "hsl": {
    "h": 215.753,
    "s": 61.345,
    "l": 53.333
  },
  "oklch": {
    "l": 0.58338,
    "c": 0.14744,
    "h": 258.1
  },
  "luminance": 0.19579
}

Semantic roles & 50–950 ramp

primary

#3F7AD1

secondary

#D5BC97

accent

#A343E4

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3F7AD1

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

Preview Lab → · Contrast checker → · Palette generator →