#3939CB#3939CB

#3939CB is a mid, highly saturated blue. Relative luminance 0.081; OKLCH L 45.3% C 0.217 H 273.5°. Best body text is #FFFFFF at 8.01:1 contrast (WCAG AA passes).

Color values

HEX	#3939CB
RGB	rgb(57, 57, 203)
HSL	hsl(240, 58%, 51%)
HSV	hsv(240, 72%, 80%)
CMYK	cmyk(71.9%, 71.9%, 0%, 20.4%)
CIE-LAB	lab(34.20, 47.20, -74.93)
CIE-LCH	lch(34.20, 88.56, 302.21°)
OKLab	oklab(45.27% 0.0133 -0.2167)
OKLCH	oklch(45.27% 0.217 273.5)
XYZ	xyz(13.9264, 8.1065, 57.3191)
Luminance	0.0811 (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

#3939CB #CBCB39

analogous

#3982CB #3939CB #8239CB

triadic

#3939CB #CB3939 #39CB39

tetradic

#3939CB #CB3982 #CBCB39 #39CB82

square

#3939CB #CB3982 #CBCB39 #39CB82

split-complementary

#3939CB #CB8239 #82CB39

monochromatic

#1D1D6D #29299D #3939CB #6969D8 #9A9AE4

Accessibility & contrast

On white

8.01

#3939CB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#3939CB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3939CB

8.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3939CB	#FFFFFF	#000000	##FFFFFF
##3939CB	1.00	8.01	2.62	8.01
#FFFFFF	8.01	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057CF

Deuteranopia (green-blind)

#0049C8

Tritanopia (blue-blind)

#00627E

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3939cb;
/* rgb */ color: rgb(57, 57, 203);
/* oklch */ color: oklch(45.3% 0.217 273.5);

Tailwind

colors: {
  custom: {
    50: '#8571dc',
    500: '#3939cb',
    950: '#000000',
  },
}

SCSS

$custom: #3939cb;
$custom-light: #8571dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3939cb",
  "rgb": {
    "r": 57,
    "g": 57,
    "b": 203
  },
  "hsl": {
    "h": 240,
    "s": 58.4,
    "l": 50.98
  },
  "oklch": {
    "l": 0.45273,
    "c": 0.21714,
    "h": 273.5
  },
  "luminance": 0.08108
}

Semantic roles & 50–950 ramp

primary

#3939CB

secondary

#D0D090

accent

#E246E2

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #3939CB

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

Preview Lab → · Contrast checker → · Palette generator →