#3F6ECC#3F6ECC

#3F6ECC is a mid, vivid blue. Relative luminance 0.166; OKLCH L 55.4% C 0.155 H 262.5°. Best body text is #FFFFFF at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#3F6ECC
RGB	rgb(63, 110, 204)
HSL	hsl(220, 58%, 52%)
HSV	hsv(220, 69%, 80%)
CMYK	cmyk(69.1%, 46.1%, 0%, 20%)
CIE-LAB	lab(47.71, 15.27, -53.52)
CIE-LCH	lch(47.71, 55.65, 285.92°)
OKLab	oklab(55.43% -0.0202 -0.1533)
OKLCH	oklch(55.43% 0.155 262.5)
XYZ	xyz(18.5210, 16.5664, 59.3366)
Luminance	0.1657 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6ECC #CC9D3F

analogous

#3FB5CC #3F6ECC #563FCC

triadic

#3F6ECC #CC3F6E #6ECC3F

tetradic

#3F6ECC #CC3FB5 #CC9D3F #3FCC56

square

#3F6ECC #CC3FB5 #CC9D3F #3FCC56

split-complementary

#3F6ECC #CC563F #B5CC3F

monochromatic

#1E3A72 #2B53A3 #3F6ECC #6F93D9 #A0B7E6

Accessibility & contrast

On white

4.87

#3F6ECC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.31

#3F6ECC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6ECC

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6ECC	#FFFFFF	#000000	##FFFFFF
##3F6ECC	1.00	4.87	4.31	4.87
#FFFFFF	4.87	1.00	21.00	1.00
#000000	4.31	21.00	1.00	21.00
##FFFFFF	4.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E78D0

Deuteranopia (green-blind)

#206BCA

Tritanopia (blue-blind)

#008493

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3f6ecc;
/* rgb */ color: rgb(63, 110, 204);
/* oklch */ color: oklch(55.4% 0.155 262.5);

Tailwind

colors: {
  custom: {
    50: '#8497dc',
    500: '#3f6ecc',
    950: '#000000',
  },
}

SCSS

$custom: #3f6ecc;
$custom-light: #8497dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6ecc",
  "rgb": {
    "r": 63,
    "g": 110,
    "b": 204
  },
  "hsl": {
    "h": 220,
    "s": 58.025,
    "l": 52.353
  },
  "oklch": {
    "l": 0.55429,
    "c": 0.15458,
    "h": 262.5
  },
  "luminance": 0.16568
}

Semantic roles & 50–950 ramp

primary

#3F6ECC

secondary

#D2BE95

accent

#AE47E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F6ECC

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

Preview Lab → · Contrast checker → · Palette generator →