#3F6CCF#3F6CCF

#3F6CCF is a mid, vivid blue. Relative luminance 0.163; OKLCH L 55.2% C 0.161 H 263.6°. Best body text is #FFFFFF at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#3F6CCF
RGB	rgb(63, 108, 207)
HSL	hsl(221, 60%, 53%)
HSV	hsv(221, 70%, 81%)
CMYK	cmyk(69.6%, 47.8%, 0%, 18.8%)
CIE-LAB	lab(47.35, 17.61, -55.82)
CIE-LCH	lch(47.35, 58.53, 287.51°)
OKLab	oklab(55.21% -0.0179 -0.1601)
OKLCH	oklch(55.21% 0.161 263.6)
XYZ	xyz(18.6710, 16.2850, 61.1787)
Luminance	0.1629 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6CCF #CFA23F

analogous

#3FB4CF #3F6CCF #5A3FCF

triadic

#3F6CCF #CF3F6C #6CCF3F

tetradic

#3F6CCF #CF3FB4 #CFA23F #3FCF5A

square

#3F6CCF #CF3FB4 #CFA23F #3FCF5A

split-complementary

#3F6CCF #CF5A3F #B4CF3F

monochromatic

#1E3976 #2A51A7 #3F6CCF #7091DB #A1B7E7

Accessibility & contrast

On white

4.93

#3F6CCF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.26

#3F6CCF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6CCF

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6CCF	#FFFFFF	#000000	##FFFFFF
##3F6CCF	1.00	4.93	4.26	4.93
#FFFFFF	4.93	1.00	21.00	1.00
#000000	4.26	21.00	1.00	21.00
##FFFFFF	4.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3777D3

Deuteranopia (green-blind)

#106ACD

Tritanopia (blue-blind)

#008393

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3f6ccf;
/* rgb */ color: rgb(63, 108, 207);
/* oklch */ color: oklch(55.2% 0.161 263.6);

Tailwind

colors: {
  custom: {
    50: '#8595de',
    500: '#3f6ccf',
    950: '#000000',
  },
}

SCSS

$custom: #3f6ccf;
$custom-light: #8595de;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6ccf",
  "rgb": {
    "r": 63,
    "g": 108,
    "b": 207
  },
  "hsl": {
    "h": 221.25,
    "s": 60,
    "l": 52.941
  },
  "oklch": {
    "l": 0.55211,
    "c": 0.16106,
    "h": 263.6
  },
  "luminance": 0.16287
}

Semantic roles & 50–950 ramp

primary

#3F6CCF

secondary

#D4C196

accent

#B245E3

background

#F8F9FD

surface

#F0F1FB

border

#CBCBD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F6CCF

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

Preview Lab → · Contrast checker → · Palette generator →