#3F7AD3#3F7AD3

#3F7AD3 is a mid, vivid blue. Relative luminance 0.197; OKLCH L 58.5% C 0.150 H 258.5°. Best body text is #000000 at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#3F7AD3
RGB	rgb(63, 122, 211)
HSL	hsl(216, 63%, 54%)
HSV	hsv(216, 70%, 83%)
CMYK	cmyk(70.1%, 42.2%, 0%, 17.3%)
CIE-LAB	lab(51.47, 10.31, -51.48)
CIE-LCH	lch(51.47, 52.51, 281.33°)
OKLab	oklab(58.46% -0.0299 -0.1471)
OKLCH	oklch(58.46% 0.15 258.5)
XYZ	xyz(20.7630, 19.6768, 64.3191)
Luminance	0.1968 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7AD3 #D3983F

analogous

#3FC4D3 #3F7AD3 #4E3FD3

triadic

#3F7AD3 #D33F7A #7AD33F

tetradic

#3F7AD3 #D33FC4 #D3983F #3FD34E

square

#3F7AD3 #D33FC4 #D3983F #3FD34E

split-complementary

#3F7AD3 #D34E3F #C4D33F

monochromatic

#1C427B #285DAD #3F7AD3 #719CDE #A3BFEA

Accessibility & contrast

On white

4.25

#3F7AD3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.94

#3F7AD3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7AD3

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7AD3	#FFFFFF	#000000	##000000
##3F7AD3	1.00	4.25	4.94	4.94
#FFFFFF	4.25	1.00	21.00	21.00
#000000	4.94	21.00	1.00	1.00
##000000	4.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F82D6

Deuteranopia (green-blind)

#3674D1

Tritanopia (blue-blind)

#008F9C

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3f7ad3;
/* rgb */ color: rgb(63, 122, 211);
/* oklch */ color: oklch(58.5% 0.150 258.5);

Tailwind

colors: {
  custom: {
    50: '#859fe1',
    500: '#3f7ad3',
    950: '#000000',
  },
}

SCSS

$custom: #3f7ad3;
$custom-light: #859fe1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7ad3",
  "rgb": {
    "r": 63,
    "g": 122,
    "b": 211
  },
  "hsl": {
    "h": 216.081,
    "s": 62.712,
    "l": 53.725
  },
  "oklch": {
    "l": 0.58463,
    "c": 0.15009,
    "h": 258.5
  },
  "luminance": 0.19679
}

Semantic roles & 50–950 ramp

primary

#3F7AD3

secondary

#D7BD97

accent

#A442E6

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3F7AD3

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

Preview Lab → · Contrast checker → · Palette generator →