#3F6CCE#3F6CCE

#3F6CCE is a mid, vivid blue. Relative luminance 0.162; OKLCH L 55.1% C 0.160 H 263.5°. Best body text is #FFFFFF at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#3F6CCE
RGB	rgb(63, 108, 206)
HSL	hsl(221, 59%, 53%)
HSV	hsv(221, 69%, 81%)
CMYK	cmyk(69.4%, 47.6%, 0%, 19.2%)
CIE-LAB	lab(47.28, 17.25, -55.35)
CIE-LCH	lch(47.28, 57.97, 287.31°)
OKLab	oklab(55.14% -0.0181 -0.1587)
OKLCH	oklch(55.14% 0.16 263.5)
XYZ	xyz(18.5491, 16.2362, 60.5369)
Luminance	0.1624 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6CCE #CEA13F

analogous

#3FB3CE #3F6CCE #5A3FCE

triadic

#3F6CCE #CE3F6C #6CCE3F

tetradic

#3F6CCE #CE3FB3 #CEA13F #3FCE5A

square

#3F6CCE #CE3FB3 #CEA13F #3FCE5A

split-complementary

#3F6CCE #CE5A3F #B3CE3F

monochromatic

#1E3975 #2A51A6 #3F6CCE #7091DA #A1B7E7

Accessibility & contrast

On white

4.94

#3F6CCE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.25

#3F6CCE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6CCE

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6CCE	#FFFFFF	#000000	##FFFFFF
##3F6CCE	1.00	4.94	4.25	4.94
#FFFFFF	4.94	1.00	21.00	1.00
#000000	4.25	21.00	1.00	21.00
##FFFFFF	4.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3877D2

Deuteranopia (green-blind)

#136ACC

Tritanopia (blue-blind)

#008393

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3f6cce;
/* rgb */ color: rgb(63, 108, 206);
/* oklch */ color: oklch(55.1% 0.160 263.5);

Tailwind

colors: {
  custom: {
    50: '#8495dd',
    500: '#3f6cce',
    950: '#000000',
  },
}

SCSS

$custom: #3f6cce;
$custom-light: #8495dd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6cce",
  "rgb": {
    "r": 63,
    "g": 108,
    "b": 206
  },
  "hsl": {
    "h": 221.119,
    "s": 59.336,
    "l": 52.745
  },
  "oklch": {
    "l": 0.55143,
    "c": 0.15969,
    "h": 263.5
  },
  "luminance": 0.16238
}

Semantic roles & 50–950 ramp

primary

#3F6CCE

secondary

#D3C095

accent

#B145E3

background

#F8F9FD

surface

#F0F1FB

border

#CBCBD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F6CCE

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

Preview Lab → · Contrast checker → · Palette generator →