#3F6BD8#3F6BD8

#3F6BD8 is a mid, vivid blue. Relative luminance 0.165; OKLCH L 55.6% C 0.174 H 264.8°. Best body text is #FFFFFF at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#3F6BD8
RGB	rgb(63, 107, 216)
HSL	hsl(223, 66%, 55%)
HSV	hsv(223, 71%, 85%)
CMYK	cmyk(70.8%, 50.5%, 0%, 15.3%)
CIE-LAB	lab(47.66, 21.49, -60.44)
CIE-LCH	lch(47.66, 64.15, 289.58°)
OKLab	oklab(55.64% -0.0159 -0.1737)
OKLCH	oklch(55.64% 0.174 264.8)
XYZ	xyz(19.6979, 16.5280, 67.1045)
Luminance	0.1653 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6BD8 #D8AC3F

analogous

#3FB8D8 #3F6BD8 #603FD8

triadic

#3F6BD8 #D83F6B #6BD83F

tetradic

#3F6BD8 #D83FB8 #D8AC3F #3FD860

square

#3F6BD8 #D83FB8 #D8AC3F #3FD860

split-complementary

#3F6BD8 #D8603F #B8D83F

monochromatic

#1A3882 #254EB5 #3F6BD8 #7292E2 #A5B9ED

Accessibility & contrast

On white

4.88

#3F6BD8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.31

#3F6BD8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6BD8

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6BD8	#FFFFFF	#000000	##FFFFFF
##3F6BD8	1.00	4.88	4.31	4.88
#FFFFFF	4.88	1.00	21.00	1.00
#000000	4.31	21.00	1.00	21.00
##FFFFFF	4.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2878DC

Deuteranopia (green-blind)

#006AD6

Tritanopia (blue-blind)

#008597

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3f6bd8;
/* rgb */ color: rgb(63, 107, 216);
/* oklch */ color: oklch(55.6% 0.174 264.8);

Tailwind

colors: {
  custom: {
    50: '#8694e5',
    500: '#3f6bd8',
    950: '#000000',
  },
}

SCSS

$custom: #3f6bd8;
$custom-light: #8694e5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6bd8",
  "rgb": {
    "r": 63,
    "g": 107,
    "b": 216
  },
  "hsl": {
    "h": 222.745,
    "s": 66.234,
    "l": 54.706
  },
  "oklch": {
    "l": 0.55637,
    "c": 0.17441,
    "h": 264.8
  },
  "luminance": 0.1653
}

Semantic roles & 50–950 ramp

primary

#3F6BD8

secondary

#DAC799

accent

#B83FE9

background

#F8F9FE

surface

#F0F1FC

border

#CBCBD5

text

#0D0D16

muted

#7D7E84

Preview Lab

Preview with #3F6BD8

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

Preview Lab → · Contrast checker → · Palette generator →