#3F6FE8#3F6FE8

#3F6FE8 is a mid, vivid blue. Relative luminance 0.183; OKLCH L 57.6% C 0.191 H 264.7°. Best body text is #000000 at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#3F6FE8
RGB	rgb(63, 111, 232)
HSL	hsl(223, 79%, 58%)
HSV	hsv(223, 73%, 91%)
CMYK	cmyk(72.8%, 52.2%, 0%, 9%)
CIE-LAB	lab(49.80, 24.75, -66.03)
CIE-LCH	lch(49.80, 70.51, 290.55°)
OKLab	oklab(57.6% -0.0175 -0.19)
OKLCH	oklch(57.6% 0.191 264.7)
XYZ	xyz(22.2947, 18.2494, 78.6758)
Luminance	0.1825 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6FE8 #E8B83F

analogous

#3FC3E8 #3F6FE8 #643FE8

triadic

#3F6FE8 #E83F6F #6FE83F

tetradic

#3F6FE8 #E83FC3 #E8B83F #3FE864

square

#3F6FE8 #E83FC3 #E8B83F #3FE864

split-complementary

#3F6FE8 #E8643F #C3E83F

monochromatic

#12399A #194DD1 #3F6FE8 #7698EF #ACC1F5

Accessibility & contrast

On white

4.52

#3F6FE8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.65

#3F6FE8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F6FE8

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6FE8	#FFFFFF	#000000	##000000
##3F6FE8	1.00	4.52	4.65	4.65
#FFFFFF	4.52	1.00	21.00	21.00
#000000	4.65	21.00	1.00	1.00
##000000	4.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#197FEC

Deuteranopia (green-blind)

#006FE6

Tritanopia (blue-blind)

#008CA1

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3f6fe8;
/* rgb */ color: rgb(63, 111, 232);
/* oklch */ color: oklch(57.6% 0.191 264.7);

Tailwind

colors: {
  custom: {
    50: '#8997f0',
    500: '#3f6fe8',
    950: '#000000',
  },
}

SCSS

$custom: #3f6fe8;
$custom-light: #8997f0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6fe8",
  "rgb": {
    "r": 63,
    "g": 111,
    "b": 232
  },
  "hsl": {
    "h": 222.959,
    "s": 78.605,
    "l": 57.843
  },
  "oklch": {
    "l": 0.57604,
    "c": 0.19086,
    "h": 264.7
  },
  "luminance": 0.18252
}

Semantic roles & 50–950 ramp

primary

#3F6FE8

secondary

#E3D0A0

accent

#BE33F5

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0D0D17

muted

#7E7E85

Preview Lab

Preview with #3F6FE8

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

Preview Lab → · Contrast checker → · Palette generator →