#3F73FF#3F73FF

#3F73FF is a mid, highly saturated blue. Relative luminance 0.205; OKLCH L 60.1% C 0.216 H 265.0°. Best body text is #000000 at 5.11:1 contrast (WCAG AA passes).

Color values

HEX	#3F73FF
RGB	rgb(63, 115, 255)
HSL	hsl(224, 100%, 62%)
HSV	hsv(224, 75%, 100%)
CMYK	cmyk(75.3%, 54.9%, 0%, 0%)
CIE-LAB	lab(52.44, 30.52, -74.56)
CIE-LCH	lch(52.44, 80.56, 292.26°)
OKLab	oklab(60.11% -0.0187 -0.2151)
OKLCH	oklch(60.11% 0.216 265)
XYZ	xyz(26.2243, 20.5353, 97.1700)
Luminance	0.2054 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F73FF #FFCB3F

analogous

#3FD3FF #3F73FF #6B3FFF

triadic

#3F73FF #FF3F73 #73FF3F

tetradic

#3F73FF #FF3FD3 #FFCB3F #3FFF6B

square

#3F73FF #FF3FD3 #FFCB3F #3FFF6B

split-complementary

#3F73FF #FF6B3F #D3FF3F

monochromatic

#0035C4 #0246FF #3F73FF #7CA0FF #B9CCFF

Accessibility & contrast

On white

4.11

#3F73FF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.11

#3F73FF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F73FF

5.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F73FF	#FFFFFF	#000000	##000000
##3F73FF	1.00	4.11	5.11	5.11
#FFFFFF	4.11	1.00	21.00	21.00
#000000	5.11	21.00	1.00	1.00
##000000	5.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0086FF

Deuteranopia (green-blind)

#0075FC

Tritanopia (blue-blind)

#0096AE

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #3f73ff;
/* rgb */ color: rgb(63, 115, 255);
/* oklch */ color: oklch(60.1% 0.216 265.0);

Tailwind

colors: {
  custom: {
    50: '#8e9aff',
    500: '#3f73ff',
    950: '#000000',
  },
}

SCSS

$custom: #3f73ff;
$custom-light: #8e9aff;
$custom-dark: #000000;

JSON

{
  "hex": "#3f73ff",
  "rgb": {
    "r": 63,
    "g": 115,
    "b": 255
  },
  "hsl": {
    "h": 223.75,
    "s": 100,
    "l": 62.353
  },
  "oklch": {
    "l": 0.60107,
    "c": 0.21589,
    "h": 265
  },
  "luminance": 0.20538
}

Semantic roles & 50–950 ramp

primary

#3F73FF

secondary

#F0DDAA

accent

#A700E6

background

#F9F9FF

surface

#F2F2FF

border

#CCCCD7

text

#0E0E18

muted

#7E7E86

Preview Lab

Preview with #3F73FF

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

Preview Lab → · Contrast checker → · Palette generator →