#3F6CCD#3F6CCD

#3F6CCD is a mid, vivid blue. Relative luminance 0.162; OKLCH L 55.1% C 0.158 H 263.4°. Best body text is #FFFFFF at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#3F6CCD
RGB	rgb(63, 108, 205)
HSL	hsl(221, 59%, 53%)
HSV	hsv(221, 69%, 80%)
CMYK	cmyk(69.3%, 47.3%, 0%, 19.6%)
CIE-LAB	lab(47.22, 16.89, -54.88)
CIE-LCH	lch(47.22, 57.42, 287.11°)
OKLab	oklab(55.07% -0.0182 -0.1573)
OKLCH	oklch(55.07% 0.158 263.4)
XYZ	xyz(18.4280, 16.1878, 59.8991)
Luminance	0.1619 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6CCD #CDA03F

analogous

#3FB3CD #3F6CCD #593FCD

triadic

#3F6CCD #CD3F6C #6CCD3F

tetradic

#3F6CCD #CD3FB3 #CDA03F #3FCD59

square

#3F6CCD #CD3FB3 #CDA03F #3FCD59

split-complementary

#3F6CCD #CD593F #B3CD3F

monochromatic

#1E3974 #2B51A4 #3F6CCD #7091DA #A0B6E6

Accessibility & contrast

On white

4.96

#3F6CCD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.24

#3F6CCD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6CCD

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6CCD	#FFFFFF	#000000	##FFFFFF
##3F6CCD	1.00	4.96	4.24	4.96
#FFFFFF	4.96	1.00	21.00	1.00
#000000	4.24	21.00	1.00	21.00
##FFFFFF	4.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3977D1

Deuteranopia (green-blind)

#166ACB

Tritanopia (blue-blind)

#008392

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3f6ccd;
/* rgb */ color: rgb(63, 108, 205);
/* oklch */ color: oklch(55.1% 0.158 263.4);

Tailwind

colors: {
  custom: {
    50: '#8495dd',
    500: '#3f6ccd',
    950: '#000000',
  },
}

SCSS

$custom: #3f6ccd;
$custom-light: #8495dd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6ccd",
  "rgb": {
    "r": 63,
    "g": 108,
    "b": 205
  },
  "hsl": {
    "h": 220.986,
    "s": 58.678,
    "l": 52.549
  },
  "oklch": {
    "l": 0.55074,
    "c": 0.15834,
    "h": 263.4
  },
  "luminance": 0.1619
}

Semantic roles & 50–950 ramp

primary

#3F6CCD

secondary

#D3BF95

accent

#B046E2

background

#F8F9FD

surface

#F0F1FB

border

#CBCBD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F6CCD

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

Preview Lab → · Contrast checker → · Palette generator →