#3F6BD0#3F6BD0

#3F6BD0 is a mid, vivid blue. Relative luminance 0.161; OKLCH L 55.1% C 0.164 H 264.1°. Best body text is #FFFFFF at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#3F6BD0
RGB	rgb(63, 107, 208)
HSL	hsl(222, 61%, 53%)
HSV	hsv(222, 70%, 82%)
CMYK	cmyk(69.7%, 48.6%, 0%, 18.4%)
CIE-LAB	lab(47.14, 18.61, -56.73)
CIE-LCH	lch(47.14, 59.70, 288.16°)
OKLab	oklab(55.07% -0.0169 -0.1627)
OKLCH	oklch(55.07% 0.164 264.1)
XYZ	xyz(18.6887, 16.1243, 61.7897)
Luminance	0.1613 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6BD0 #D0A43F

analogous

#3FB3D0 #3F6BD0 #5B3FD0

triadic

#3F6BD0 #D03F6B #6BD03F

tetradic

#3F6BD0 #D03FB3 #D0A43F #3FD05B

square

#3F6BD0 #D03FB3 #D0A43F #3FD05B

split-complementary

#3F6BD0 #D05B3F #B3D03F

monochromatic

#1D3977 #2950A9 #3F6BD0 #7091DC #A1B7E8

Accessibility & contrast

On white

4.97

#3F6BD0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.23

#3F6BD0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6BD0

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6BD0	#FFFFFF	#000000	##FFFFFF
##3F6BD0	1.00	4.97	4.23	4.97
#FFFFFF	4.97	1.00	21.00	1.00
#000000	4.23	21.00	1.00	21.00
##FFFFFF	4.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3377D4

Deuteranopia (green-blind)

#036ACE

Tritanopia (blue-blind)

#008393

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3f6bd0;
/* rgb */ color: rgb(63, 107, 208);
/* oklch */ color: oklch(55.1% 0.164 264.1);

Tailwind

colors: {
  custom: {
    50: '#8594df',
    500: '#3f6bd0',
    950: '#000000',
  },
}

SCSS

$custom: #3f6bd0;
$custom-light: #8594df;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6bd0",
  "rgb": {
    "r": 63,
    "g": 107,
    "b": 208
  },
  "hsl": {
    "h": 221.793,
    "s": 60.669,
    "l": 53.137
  },
  "oklch": {
    "l": 0.55072,
    "c": 0.16362,
    "h": 264.1
  },
  "luminance": 0.16126
}

Semantic roles & 50–950 ramp

primary

#3F6BD0

secondary

#D5C296

accent

#B344E4

background

#F8F9FD

surface

#F0F1FB

border

#CBCBD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F6BD0

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

Preview Lab → · Contrast checker → · Palette generator →