#3939CF#3939CF

#3939CF is a mid, highly saturated blue. Relative luminance 0.083; OKLCH L 45.7% C 0.222 H 273.3°. Best body text is #FFFFFF at 7.89:1 contrast (WCAG AA passes).

Color values

HEX	#3939CF
RGB	rgb(57, 57, 207)
HSL	hsl(240, 61%, 52%)
HSV	hsv(240, 72%, 81%)
CMYK	cmyk(72.5%, 72.5%, 0%, 18.8%)
CIE-LAB	lab(34.60, 48.51, -76.60)
CIE-LCH	lch(34.60, 90.67, 302.34°)
OKLab	oklab(45.67% 0.0126 -0.2216)
OKLCH	oklch(45.67% 0.222 273.3)
XYZ	xyz(14.4092, 8.2996, 59.8620)
Luminance	0.0830 (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

#3939CF #CFCF39

analogous

#3984CF #3939CF #8439CF

triadic

#3939CF #CF3939 #39CF39

tetradic

#3939CF #CF3984 #CFCF39 #39CF84

square

#3939CF #CF3984 #CFCF39 #39CF84

split-complementary

#3939CF #CF8439 #84CF39

monochromatic

#1C1C72 #2828A3 #3939CF #6A6ADB #9C9CE7

Accessibility & contrast

On white

7.89

#3939CF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#3939CF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3939CF

7.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3939CF	#FFFFFF	#000000	##FFFFFF
##3939CF	1.00	7.89	2.66	7.89
#FFFFFF	7.89	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059D3

Deuteranopia (green-blind)

#004ACC

Tritanopia (blue-blind)

#006481

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3939cf;
/* rgb */ color: rgb(57, 57, 207);
/* oklch */ color: oklch(45.7% 0.222 273.3);

Tailwind

colors: {
  custom: {
    50: '#8671df',
    500: '#3939cf',
    950: '#000000',
  },
}

SCSS

$custom: #3939cf;
$custom-light: #8671df;
$custom-dark: #000000;

JSON

{
  "hex": "#3939cf",
  "rgb": {
    "r": 57,
    "g": 57,
    "b": 207
  },
  "hsl": {
    "h": 240,
    "s": 60.976,
    "l": 51.765
  },
  "oklch": {
    "l": 0.45674,
    "c": 0.22197,
    "h": 273.3
  },
  "luminance": 0.08301
}

Semantic roles & 50–950 ramp

primary

#3939CF

secondary

#D3D391

accent

#E444E4

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #3939CF

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

Preview Lab → · Contrast checker → · Palette generator →