#3F6CCC#3F6CCC

#3F6CCC is a mid, vivid blue. Relative luminance 0.161; OKLCH L 55.0% C 0.157 H 263.3°. Best body text is #FFFFFF at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#3F6CCC
RGB	rgb(63, 108, 204)
HSL	hsl(221, 58%, 52%)
HSV	hsv(221, 69%, 80%)
CMYK	cmyk(69.1%, 47.1%, 0%, 20%)
CIE-LAB	lab(47.16, 16.53, -54.40)
CIE-LCH	lch(47.16, 56.86, 286.90°)
OKLab	oklab(55.01% -0.0184 -0.1559)
OKLCH	oklch(55.01% 0.157 263.3)
XYZ	xyz(18.3077, 16.1397, 59.2655)
Luminance	0.1614 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6CCC #CC9F3F

analogous

#3FB3CC #3F6CCC #583FCC

triadic

#3F6CCC #CC3F6C #6CCC3F

tetradic

#3F6CCC #CC3FB3 #CC9F3F #3FCC58

square

#3F6CCC #CC3FB3 #CC9F3F #3FCC58

split-complementary

#3F6CCC #CC583F #B3CC3F

monochromatic

#1E3972 #2B51A3 #3F6CCC #6F91D9 #A0B6E6

Accessibility & contrast

On white

4.97

#3F6CCC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.23

#3F6CCC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6CCC

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6CCC	#FFFFFF	#000000	##FFFFFF
##3F6CCC	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)

#3A77D0

Deuteranopia (green-blind)

#196ACA

Tritanopia (blue-blind)

#008292

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3f6ccc;
/* rgb */ color: rgb(63, 108, 204);
/* oklch */ color: oklch(55.0% 0.157 263.3);

Tailwind

colors: {
  custom: {
    50: '#8495dc',
    500: '#3f6ccc',
    950: '#000000',
  },
}

SCSS

$custom: #3f6ccc;
$custom-light: #8495dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6ccc",
  "rgb": {
    "r": 63,
    "g": 108,
    "b": 204
  },
  "hsl": {
    "h": 220.851,
    "s": 58.025,
    "l": 52.353
  },
  "oklch": {
    "l": 0.55006,
    "c": 0.15698,
    "h": 263.3
  },
  "luminance": 0.16142
}

Semantic roles & 50–950 ramp

primary

#3F6CCC

secondary

#D2BF95

accent

#B047E1

background

#F8F9FD

surface

#F0F1FB

border

#CBCBD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F6CCC

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

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