#3F6FCC#3F6FCC

#3F6FCC is a mid, vivid blue. Relative luminance 0.168; OKLCH L 55.6% C 0.153 H 262.1°. Best body text is #FFFFFF at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#3F6FCC
RGB	rgb(63, 111, 204)
HSL	hsl(220, 58%, 52%)
HSV	hsv(220, 69%, 80%)
CMYK	cmyk(69.1%, 45.6%, 0%, 20%)
CIE-LAB	lab(47.99, 14.64, -53.07)
CIE-LCH	lch(47.99, 55.06, 285.42°)
OKLab	oklab(55.64% -0.0211 -0.1519)
OKLCH	oklch(55.64% 0.153 262.1)
XYZ	xyz(18.6295, 16.7834, 59.3727)
Luminance	0.1678 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6FCC #CC9C3F

analogous

#3FB6CC #3F6FCC #553FCC

triadic

#3F6FCC #CC3F6F #6FCC3F

tetradic

#3F6FCC #CC3FB6 #CC9C3F #3FCC55

square

#3F6FCC #CC3FB6 #CC9C3F #3FCC55

split-complementary

#3F6FCC #CC553F #B6CC3F

monochromatic

#1E3B72 #2B54A3 #3F6FCC #6F93D9 #A0B8E6

Accessibility & contrast

On white

4.82

#3F6FCC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.36

#3F6FCC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6FCC

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6FCC	#FFFFFF	#000000	##FFFFFF
##3F6FCC	1.00	4.82	4.36	4.82
#FFFFFF	4.82	1.00	21.00	1.00
#000000	4.36	21.00	1.00	21.00
##FFFFFF	4.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4079D0

Deuteranopia (green-blind)

#246CCA

Tritanopia (blue-blind)

#008593

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3f6fcc;
/* rgb */ color: rgb(63, 111, 204);
/* oklch */ color: oklch(55.6% 0.153 262.1);

Tailwind

colors: {
  custom: {
    50: '#8497dc',
    500: '#3f6fcc',
    950: '#000000',
  },
}

SCSS

$custom: #3f6fcc;
$custom-light: #8497dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6fcc",
  "rgb": {
    "r": 63,
    "g": 111,
    "b": 204
  },
  "hsl": {
    "h": 219.574,
    "s": 58.025,
    "l": 52.353
  },
  "oklch": {
    "l": 0.55642,
    "c": 0.1534,
    "h": 262.1
  },
  "luminance": 0.16785
}

Semantic roles & 50–950 ramp

primary

#3F6FCC

secondary

#D2BD95

accent

#AD47E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F6FCC

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

Preview Lab → · Contrast checker → · Palette generator →