#3943C7#3943C7

#3943C7 is a mid, highly saturated blue. Relative luminance 0.090; OKLCH L 46.5% C 0.201 H 272.3°. Best body text is #FFFFFF at 7.50:1 contrast (WCAG AA passes).

Color values

HEX	#3943C7
RGB	rgb(57, 67, 199)
HSL	hsl(236, 56%, 50%)
HSV	hsv(236, 71%, 78%)
CMYK	cmyk(71.4%, 66.3%, 0%, 22%)
CIE-LAB	lab(36.00, 39.93, -69.65)
CIE-LCH	lch(36.00, 80.29, 299.83°)
OKLab	oklab(46.45% 0.008 -0.2013)
OKLCH	oklch(46.45% 0.201 272.3)
XYZ	xyz(13.9998, 9.0063, 55.0223)
Luminance	0.0901 (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

#3943C7 #C7BD39

analogous

#398AC7 #3943C7 #7639C7

triadic

#3943C7 #C73943 #43C739

tetradic

#3943C7 #C7398A #C7BD39 #39C776

square

#3943C7 #C7398A #C7BD39 #39C776

split-complementary

#3943C7 #C77639 #8AC739

monochromatic

#1D2368 #2B3398 #3943C7 #6970D4 #989EE2

Accessibility & contrast

On white

7.50

#3943C7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#3943C7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3943C7

7.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3943C7	#FFFFFF	#000000	##FFFFFF
##3943C7	1.00	7.50	2.80	7.50
#FFFFFF	7.50	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BCB

Deuteranopia (green-blind)

#004EC5

Tritanopia (blue-blind)

#00667F

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3943c7;
/* rgb */ color: rgb(57, 67, 199);
/* oklch */ color: oklch(46.5% 0.201 272.3);

Tailwind

colors: {
  custom: {
    50: '#8377d9',
    500: '#3943c7',
    950: '#000000',
  },
}

SCSS

$custom: #3943c7;
$custom-light: #8377d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3943c7",
  "rgb": {
    "r": 57,
    "g": 67,
    "b": 199
  },
  "hsl": {
    "h": 235.775,
    "s": 55.906,
    "l": 50.196
  },
  "oklch": {
    "l": 0.46452,
    "c": 0.20149,
    "h": 272.3
  },
  "luminance": 0.09008
}

Semantic roles & 50–950 ramp

primary

#3943C7

secondary

#CEC98E

accent

#D549DF

background

#F8F7FD

surface

#F0EDFB

border

#CBC8D4

text

#0C0915

muted

#7D7B83

Preview Lab

Preview with #3943C7

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

Preview Lab → · Contrast checker → · Palette generator →