#3F7AD5#3F7AD5

#3F7AD5 is a mid, vivid blue. Relative luminance 0.198; OKLCH L 58.6% C 0.153 H 258.9°. Best body text is #000000 at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#3F7AD5
RGB	rgb(63, 122, 213)
HSL	hsl(216, 64%, 54%)
HSV	hsv(216, 70%, 84%)
CMYK	cmyk(70.4%, 42.7%, 0%, 16.5%)
CIE-LAB	lab(51.58, 11.03, -52.43)
CIE-LCH	lch(51.58, 53.58, 281.88°)
OKLab	oklab(58.59% -0.0295 -0.1499)
OKLCH	oklch(58.59% 0.153 258.9)
XYZ	xyz(21.0153, 19.7777, 65.6478)
Luminance	0.1978 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7AD5 #D59A3F

analogous

#3FC5D5 #3F7AD5 #4F3FD5

triadic

#3F7AD5 #D53F7A #7AD53F

tetradic

#3F7AD5 #D53FC5 #D59A3F #3FD54F

square

#3F7AD5 #D53FC5 #D59A3F #3FD54F

split-complementary

#3F7AD5 #D54F3F #C5D53F

monochromatic

#1C427E #275DB0 #3F7AD5 #719DE0 #A3C0EB

Accessibility & contrast

On white

4.24

#3F7AD5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.96

#3F7AD5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7AD5

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7AD5	#FFFFFF	#000000	##000000
##3F7AD5	1.00	4.24	4.96	4.96
#FFFFFF	4.24	1.00	21.00	21.00
#000000	4.96	21.00	1.00	1.00
##000000	4.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E82D9

Deuteranopia (green-blind)

#3475D3

Tritanopia (blue-blind)

#008F9D

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3f7ad5;
/* rgb */ color: rgb(63, 122, 213);
/* oklch */ color: oklch(58.6% 0.153 258.9);

Tailwind

colors: {
  custom: {
    50: '#859fe2',
    500: '#3f7ad5',
    950: '#000000',
  },
}

SCSS

$custom: #3f7ad5;
$custom-light: #859fe2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7ad5",
  "rgb": {
    "r": 63,
    "g": 122,
    "b": 213
  },
  "hsl": {
    "h": 216.4,
    "s": 64.103,
    "l": 54.118
  },
  "oklch": {
    "l": 0.5859,
    "c": 0.15275,
    "h": 258.9
  },
  "luminance": 0.1978
}

Semantic roles & 50–950 ramp

primary

#3F7AD5

secondary

#D8BF98

accent

#A641E7

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3F7AD5

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

Preview Lab → · Contrast checker → · Palette generator →