#3F6BCA#3F6BCA

#3F6BCA is a mid, vivid blue. Relative luminance 0.158; OKLCH L 54.7% C 0.155 H 263.4°. Best body text is #FFFFFF at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#3F6BCA
RGB	rgb(63, 107, 202)
HSL	hsl(221, 57%, 52%)
HSV	hsv(221, 69%, 79%)
CMYK	cmyk(68.8%, 47%, 0%, 20.8%)
CIE-LAB	lab(46.76, 16.44, -53.90)
CIE-LCH	lch(46.76, 56.35, 286.96°)
OKLab	oklab(54.66% -0.0177 -0.1544)
OKLCH	oklch(54.66% 0.155 263.4)
XYZ	xyz(17.9645, 15.8346, 57.9753)
Luminance	0.1584 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6BCA #CA9E3F

analogous

#3FB1CA #3F6BCA #593FCA

triadic

#3F6BCA #CA3F6B #6BCA3F

tetradic

#3F6BCA #CA3FB1 #CA9E3F #3FCA59

square

#3F6BCA #CA3FB1 #CA9E3F #3FCA59

split-complementary

#3F6BCA #CA593F #B1CA3F

monochromatic

#1F3870 #2C51A0 #3F6BCA #6F90D7 #9FB5E4

Accessibility & contrast

On white

5.04

#3F6BCA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.17

#3F6BCA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6BCA

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6BCA	#FFFFFF	#000000	##FFFFFF
##3F6BCA	1.00	5.04	4.17	5.04
#FFFFFF	5.04	1.00	21.00	1.00
#000000	4.17	21.00	1.00	21.00
##FFFFFF	5.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3976CE

Deuteranopia (green-blind)

#1A69C8

Tritanopia (blue-blind)

#008191

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #3f6bca;
/* rgb */ color: rgb(63, 107, 202);
/* oklch */ color: oklch(54.7% 0.155 263.4);

Tailwind

colors: {
  custom: {
    50: '#8494db',
    500: '#3f6bca',
    950: '#000000',
  },
}

SCSS

$custom: #3f6bca;
$custom-light: #8494db;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6bca",
  "rgb": {
    "r": 63,
    "g": 107,
    "b": 202
  },
  "hsl": {
    "h": 221.007,
    "s": 56.735,
    "l": 51.961
  },
  "oklch": {
    "l": 0.54659,
    "c": 0.15545,
    "h": 263.4
  },
  "luminance": 0.15836
}

Semantic roles & 50–950 ramp

primary

#3F6BCA

secondary

#D1BE94

accent

#B048E0

background

#F8F9FD

surface

#F0F1FB

border

#CBCBD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F6BCA

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

Preview Lab → · Contrast checker → · Palette generator →