#3F6DCD#3F6DCD

#3F6DCD is a mid, vivid blue. Relative luminance 0.164; OKLCH L 55.3% C 0.157 H 263.0°. Best body text is #FFFFFF at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#3F6DCD
RGB	rgb(63, 109, 205)
HSL	hsl(221, 59%, 53%)
HSV	hsv(221, 69%, 80%)
CMYK	cmyk(69.3%, 46.8%, 0%, 19.6%)
CIE-LAB	lab(47.49, 16.26, -54.43)
CIE-LCH	lch(47.49, 56.81, 286.63°)
OKLab	oklab(55.29% -0.0191 -0.156)
OKLCH	oklch(55.29% 0.157 263)
XYZ	xyz(18.5341, 16.3999, 59.9345)
Luminance	0.1640 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6DCD #CD9F3F

analogous

#3FB4CD #3F6DCD #583FCD

triadic

#3F6DCD #CD3F6D #6DCD3F

tetradic

#3F6DCD #CD3FB4 #CD9F3F #3FCD58

square

#3F6DCD #CD3FB4 #CD9F3F #3FCD58

split-complementary

#3F6DCD #CD583F #B4CD3F

monochromatic

#1E3A74 #2B52A4 #3F6DCD #7092DA #A0B7E6

Accessibility & contrast

On white

4.91

#3F6DCD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.28

#3F6DCD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6DCD

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6DCD	#FFFFFF	#000000	##FFFFFF
##3F6DCD	1.00	4.91	4.28	4.91
#FFFFFF	4.91	1.00	21.00	1.00
#000000	4.28	21.00	1.00	21.00
##FFFFFF	4.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B78D1

Deuteranopia (green-blind)

#1B6BCB

Tritanopia (blue-blind)

#008393

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3f6dcd;
/* rgb */ color: rgb(63, 109, 205);
/* oklch */ color: oklch(55.3% 0.157 263.0);

Tailwind

colors: {
  custom: {
    50: '#8496dd',
    500: '#3f6dcd',
    950: '#000000',
  },
}

SCSS

$custom: #3f6dcd;
$custom-light: #8496dd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6dcd",
  "rgb": {
    "r": 63,
    "g": 109,
    "b": 205
  },
  "hsl": {
    "h": 220.563,
    "s": 58.678,
    "l": 52.549
  },
  "oklch": {
    "l": 0.55285,
    "c": 0.15714,
    "h": 263
  },
  "luminance": 0.16402
}

Semantic roles & 50–950 ramp

primary

#3F6DCD

secondary

#D3BF95

accent

#AF46E2

background

#F8F9FD

surface

#F0F1FB

border

#CBCBD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F6DCD

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

Preview Lab → · Contrast checker → · Palette generator →