#3F6DCC#3F6DCC

#3F6DCC is a mid, vivid blue. Relative luminance 0.164; OKLCH L 55.2% C 0.156 H 262.9°. Best body text is #FFFFFF at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#3F6DCC
RGB	rgb(63, 109, 204)
HSL	hsl(220, 58%, 52%)
HSV	hsv(220, 69%, 80%)
CMYK	cmyk(69.1%, 46.6%, 0%, 20%)
CIE-LAB	lab(47.43, 15.90, -53.96)
CIE-LCH	lch(47.43, 56.26, 286.42°)
OKLab	oklab(55.22% -0.0193 -0.1546)
OKLCH	oklch(55.22% 0.156 262.9)
XYZ	xyz(18.4138, 16.3518, 59.3008)
Luminance	0.1635 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6DCC #CC9E3F

analogous

#3FB3CC #3F6DCC #583FCC

triadic

#3F6DCC #CC3F6D #6DCC3F

tetradic

#3F6DCC #CC3FB3 #CC9E3F #3FCC58

square

#3F6DCC #CC3FB3 #CC9E3F #3FCC58

split-complementary

#3F6DCC #CC583F #B3CC3F

monochromatic

#1E3A72 #2B52A3 #3F6DCC #6F92D9 #A0B7E6

Accessibility & contrast

On white

4.92

#3F6DCC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.27

#3F6DCC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6DCC

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6DCC	#FFFFFF	#000000	##FFFFFF
##3F6DCC	1.00	4.92	4.27	4.92
#FFFFFF	4.92	1.00	21.00	1.00
#000000	4.27	21.00	1.00	21.00
##FFFFFF	4.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C77D0

Deuteranopia (green-blind)

#1D6ACA

Tritanopia (blue-blind)

#008392

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3f6dcc;
/* rgb */ color: rgb(63, 109, 204);
/* oklch */ color: oklch(55.2% 0.156 262.9);

Tailwind

colors: {
  custom: {
    50: '#8496dc',
    500: '#3f6dcc',
    950: '#000000',
  },
}

SCSS

$custom: #3f6dcc;
$custom-light: #8496dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6dcc",
  "rgb": {
    "r": 63,
    "g": 109,
    "b": 204
  },
  "hsl": {
    "h": 220.426,
    "s": 58.025,
    "l": 52.353
  },
  "oklch": {
    "l": 0.55217,
    "c": 0.15578,
    "h": 262.9
  },
  "luminance": 0.16354
}

Semantic roles & 50–950 ramp

primary

#3F6DCC

secondary

#D2BE95

accent

#AF47E1

background

#F8F9FD

surface

#F0F1FB

border

#CBCBD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F6DCC

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

Preview Lab → · Contrast checker → · Palette generator →