#3F7AD7#3F7AD7

#3F7AD7 is a mid, vivid blue. Relative luminance 0.199; OKLCH L 58.7% C 0.155 H 259.2°. Best body text is #000000 at 4.98:1 contrast (WCAG AA passes).

Color values

HEX	#3F7AD7
RGB	rgb(63, 122, 215)
HSL	hsl(217, 66%, 55%)
HSV	hsv(217, 71%, 84%)
CMYK	cmyk(70.7%, 43.3%, 0%, 15.7%)
CIE-LAB	lab(51.70, 11.75, -53.38)
CIE-LCH	lch(51.70, 54.66, 282.41°)
OKLab	oklab(58.72% -0.0291 -0.1527)
OKLCH	oklch(58.72% 0.155 259.2)
XYZ	xyz(21.2707, 19.8799, 66.9930)
Luminance	0.1988 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7AD7 #D79C3F

analogous

#3FC6D7 #3F7AD7 #503FD7

triadic

#3F7AD7 #D73F7A #7AD73F

tetradic

#3F7AD7 #D73FC6 #D79C3F #3FD750

square

#3F7AD7 #D73FC6 #D79C3F #3FD750

split-complementary

#3F7AD7 #D7503F #C6D73F

monochromatic

#1B4281 #255DB3 #3F7AD7 #729DE2 #A4C0EC

Accessibility & contrast

On white

4.22

#3F7AD7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.98

#3F7AD7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7AD7

4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7AD7	#FFFFFF	#000000	##000000
##3F7AD7	1.00	4.22	4.98	4.98
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.98	21.00	1.00	1.00
##000000	4.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C83DB

Deuteranopia (green-blind)

#3175D5

Tritanopia (blue-blind)

#00909E

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3f7ad7;
/* rgb */ color: rgb(63, 122, 215);
/* oklch */ color: oklch(58.7% 0.155 259.2);

Tailwind

colors: {
  custom: {
    50: '#869fe4',
    500: '#3f7ad7',
    950: '#000000',
  },
}

SCSS

$custom: #3f7ad7;
$custom-light: #869fe4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7ad7",
  "rgb": {
    "r": 63,
    "g": 122,
    "b": 215
  },
  "hsl": {
    "h": 216.711,
    "s": 65.517,
    "l": 54.51
  },
  "oklch": {
    "l": 0.58717,
    "c": 0.15541,
    "h": 259.2
  },
  "luminance": 0.19882
}

Semantic roles & 50–950 ramp

primary

#3F7AD7

secondary

#D9C099

accent

#A73FE8

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0C0E15

muted

#7D7E84

Preview Lab

Preview with #3F7AD7

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

Preview Lab → · Contrast checker → · Palette generator →