#3F6BC8#3F6BC8

#3F6BC8 is a mid, vivid blue. Relative luminance 0.157; OKLCH L 54.5% C 0.153 H 263.2°. Best body text is #FFFFFF at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#3F6BC8
RGB	rgb(63, 107, 200)
HSL	hsl(221, 55%, 52%)
HSV	hsv(221, 69%, 78%)
CMYK	cmyk(68.5%, 46.5%, 0%, 21.6%)
CIE-LAB	lab(46.63, 15.72, -52.95)
CIE-LCH	lch(46.63, 55.24, 286.53°)
OKLab	oklab(54.52% -0.018 -0.1516)
OKLCH	oklch(54.52% 0.153 263.2)
XYZ	xyz(17.7292, 15.7405, 56.7363)
Luminance	0.1574 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6BC8 #C89C3F

analogous

#3FB0C8 #3F6BC8 #583FC8

triadic

#3F6BC8 #C83F6B #6BC83F

tetradic

#3F6BC8 #C83FB0 #C89C3F #3FC858

square

#3F6BC8 #C83FB0 #C89C3F #3FC858

split-complementary

#3F6BC8 #C8583F #B0C83F

monochromatic

#1F386D #2D519D #3F6BC8 #6F90D6 #9EB4E3

Accessibility & contrast

On white

5.06

#3F6BC8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.15

#3F6BC8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6BC8

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6BC8	#FFFFFF	#000000	##FFFFFF
##3F6BC8	1.00	5.06	4.15	5.06
#FFFFFF	5.06	1.00	21.00	1.00
#000000	4.15	21.00	1.00	21.00
##FFFFFF	5.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B75CB

Deuteranopia (green-blind)

#1E69C6

Tritanopia (blue-blind)

#008190

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #3f6bc8;
/* rgb */ color: rgb(63, 107, 200);
/* oklch */ color: oklch(54.5% 0.153 263.2);

Tailwind

colors: {
  custom: {
    50: '#8394d9',
    500: '#3f6bc8',
    950: '#000000',
  },
}

SCSS

$custom: #3f6bc8;
$custom-light: #8394d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6bc8",
  "rgb": {
    "r": 63,
    "g": 107,
    "b": 200
  },
  "hsl": {
    "h": 220.73,
    "s": 55.466,
    "l": 51.569
  },
  "oklch": {
    "l": 0.54524,
    "c": 0.15272,
    "h": 263.2
  },
  "luminance": 0.15742
}

Semantic roles & 50–950 ramp

primary

#3F6BC8

secondary

#D0BC93

accent

#AF49DF

background

#F8F9FD

surface

#F0F1FA

border

#CBCBD3

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F6BC8

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

Preview Lab → · Contrast checker → · Palette generator →