#3947CF#3947CF

#3947CF is a mid, highly saturated blue. Relative luminance 0.099; OKLCH L 47.9% C 0.207 H 271.3°. Best body text is #FFFFFF at 7.06:1 contrast (WCAG AA passes).

Color values

HEX	#3947CF
RGB	rgb(57, 71, 207)
HSL	hsl(234, 61%, 52%)
HSV	hsv(234, 72%, 81%)
CMYK	cmyk(72.5%, 65.7%, 0%, 18.8%)
CIE-LAB	lab(37.63, 40.25, -71.62)
CIE-LCH	lch(37.63, 82.16, 299.33°)
OKLab	oklab(47.86% 0.0048 -0.2071)
OKLCH	oklch(47.86% 0.207 271.3)
XYZ	xyz(15.1992, 9.8798, 60.1253)
Luminance	0.0988 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3947CF #CFC139

analogous

#3992CF #3947CF #7639CF

triadic

#3947CF #CF3947 #47CF39

tetradic

#3947CF #CF3992 #CFC139 #39CF76

square

#3947CF #CF3992 #CFC139 #39CF76

split-complementary

#3947CF #CF7639 #92CF39

monochromatic

#1C2472 #2833A3 #3947CF #6A75DB #9CA3E7

Accessibility & contrast

On white

7.06

#3947CF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.98

#3947CF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3947CF

7.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3947CF	#FFFFFF	#000000	##FFFFFF
##3947CF	1.00	7.06	2.98	7.06
#FFFFFF	7.06	1.00	21.00	1.00
#000000	2.98	21.00	1.00	21.00
##FFFFFF	7.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060D3

Deuteranopia (green-blind)

#0052CC

Tritanopia (blue-blind)

#006B85

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3947cf;
/* rgb */ color: rgb(57, 71, 207);
/* oklch */ color: oklch(47.9% 0.207 271.3);

Tailwind

colors: {
  custom: {
    50: '#857adf',
    500: '#3947cf',
    950: '#000000',
  },
}

SCSS

$custom: #3947cf;
$custom-light: #857adf;
$custom-dark: #000000;

JSON

{
  "hex": "#3947cf",
  "rgb": {
    "r": 57,
    "g": 71,
    "b": 207
  },
  "hsl": {
    "h": 234.4,
    "s": 60.976,
    "l": 51.765
  },
  "oklch": {
    "l": 0.47856,
    "c": 0.20714,
    "h": 271.3
  },
  "luminance": 0.09881
}

Semantic roles & 50–950 ramp

primary

#3947CF

secondary

#D3CD91

accent

#D544E4

background

#F8F7FD

surface

#F0EDFB

border

#CBC8D4

text

#0D0915

muted

#7D7B83

Preview Lab

Preview with #3947CF

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

Preview Lab → · Contrast checker → · Palette generator →