#3F6CDA#3F6CDA

#3F6CDA is a mid, vivid blue. Relative luminance 0.168; OKLCH L 56.0% C 0.176 H 264.6°. Best body text is #FFFFFF at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#3F6CDA
RGB	rgb(63, 108, 218)
HSL	hsl(223, 68%, 55%)
HSV	hsv(223, 71%, 85%)
CMYK	cmyk(71.1%, 50.5%, 0%, 14.5%)
CIE-LAB	lab(48.06, 21.59, -60.93)
CIE-LCH	lch(48.06, 64.64, 289.51°)
OKLab	oklab(55.98% -0.0165 -0.1751)
OKLCH	oklch(55.98% 0.176 264.6)
XYZ	xyz(20.0629, 16.8417, 68.5095)
Luminance	0.1684 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6CDA #DAAD3F

analogous

#3FB9DA #3F6CDA #603FDA

triadic

#3F6CDA #DA3F6C #6CDA3F

tetradic

#3F6CDA #DA3FB9 #DAAD3F #3FDA60

square

#3F6CDA #DA3FB9 #DAAD3F #3FDA60

split-complementary

#3F6CDA #DA603F #B9DA3F

monochromatic

#1A3985 #244FB8 #3F6CDA #7293E4 #A6BBEE

Accessibility & contrast

On white

4.81

#3F6CDA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.37

#3F6CDA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6CDA

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6CDA	#FFFFFF	#000000	##FFFFFF
##3F6CDA	1.00	4.81	4.37	4.81
#FFFFFF	4.81	1.00	21.00	1.00
#000000	4.37	21.00	1.00	21.00
##FFFFFF	4.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#297ADE

Deuteranopia (green-blind)

#006BD8

Tritanopia (blue-blind)

#008699

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3f6cda;
/* rgb */ color: rgb(63, 108, 218);
/* oklch */ color: oklch(56.0% 0.176 264.6);

Tailwind

colors: {
  custom: {
    50: '#8795e6',
    500: '#3f6cda',
    950: '#000000',
  },
}

SCSS

$custom: #3f6cda;
$custom-light: #8795e6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6cda",
  "rgb": {
    "r": 63,
    "g": 108,
    "b": 218
  },
  "hsl": {
    "h": 222.581,
    "s": 67.686,
    "l": 55.098
  },
  "oklch": {
    "l": 0.55984,
    "c": 0.17588,
    "h": 264.6
  },
  "luminance": 0.16844
}

Semantic roles & 50–950 ramp

primary

#3F6CDA

secondary

#DBC89A

accent

#B83DEB

background

#F9F9FE

surface

#F1F1FC

border

#CBCBD5

text

#0D0D16

muted

#7E7E84

Preview Lab

Preview with #3F6CDA

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

Preview Lab → · Contrast checker → · Palette generator →