#3F6BCF#3F6BCF

#3F6BCF is a mid, vivid blue. Relative luminance 0.161; OKLCH L 55.0% C 0.162 H 264.0°. Best body text is #FFFFFF at 4.98:1 contrast (WCAG AA passes).

Color values

HEX	#3F6BCF
RGB	rgb(63, 107, 207)
HSL	hsl(222, 60%, 53%)
HSV	hsv(222, 70%, 81%)
CMYK	cmyk(69.6%, 48.3%, 0%, 18.8%)
CIE-LAB	lab(47.07, 18.24, -56.26)
CIE-LCH	lch(47.07, 59.14, 287.97°)
OKLab	oklab(55% -0.017 -0.1614)
OKLCH	oklch(55% 0.162 264)
XYZ	xyz(18.5661, 16.0752, 61.1438)
Luminance	0.1608 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6BCF #CFA33F

analogous

#3FB3CF #3F6BCF #5B3FCF

triadic

#3F6BCF #CF3F6B #6BCF3F

tetradic

#3F6BCF #CF3FB3 #CFA33F #3FCF5B

square

#3F6BCF #CF3FB3 #CFA33F #3FCF5B

split-complementary

#3F6BCF #CF5B3F #B3CF3F

monochromatic

#1E3976 #2A50A7 #3F6BCF #7091DB #A1B6E7

Accessibility & contrast

On white

4.98

#3F6BCF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.22

#3F6BCF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6BCF

4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6BCF	#FFFFFF	#000000	##FFFFFF
##3F6BCF	1.00	4.98	4.22	4.98
#FFFFFF	4.98	1.00	21.00	1.00
#000000	4.22	21.00	1.00	21.00
##FFFFFF	4.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3477D3

Deuteranopia (green-blind)

#0869CD

Tritanopia (blue-blind)

#008293

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3f6bcf;
/* rgb */ color: rgb(63, 107, 207);
/* oklch */ color: oklch(55.0% 0.162 264.0);

Tailwind

colors: {
  custom: {
    50: '#8594de',
    500: '#3f6bcf',
    950: '#000000',
  },
}

SCSS

$custom: #3f6bcf;
$custom-light: #8594de;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6bcf",
  "rgb": {
    "r": 63,
    "g": 107,
    "b": 207
  },
  "hsl": {
    "h": 221.667,
    "s": 60,
    "l": 52.941
  },
  "oklch": {
    "l": 0.55003,
    "c": 0.16227,
    "h": 264
  },
  "luminance": 0.16077
}

Semantic roles & 50–950 ramp

primary

#3F6BCF

secondary

#D4C196

accent

#B345E3

background

#F8F9FD

surface

#F0F1FB

border

#CBCBD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F6BCF

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

Preview Lab → · Contrast checker → · Palette generator →