#3939B1#3939B1

#3939B1 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.8% C 0.185 H 275.3°. Best body text is #FFFFFF at 8.77:1 contrast (WCAG AA passes).

Color values

HEX	#3939B1
RGB	rgb(57, 57, 177)
HSL	hsl(240, 51%, 46%)
HSV	hsv(240, 68%, 69%)
CMYK	cmyk(67.8%, 67.8%, 0%, 30.6%)
CIE-LAB	lab(31.74, 38.52, -63.68)
CIE-LCH	lch(31.74, 74.42, 301.17°)
OKLab	oklab(42.75% 0.0169 -0.1839)
OKLCH	oklch(42.75% 0.185 275.3)
XYZ	xyz(11.0837, 6.9694, 42.3476)
Luminance	0.0697 (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

#3939B1 #B1B139

analogous

#3975B1 #3939B1 #7539B1

triadic

#3939B1 #B13939 #39B139

tetradic

#3939B1 #B13975 #B1B139 #39B175

square

#3939B1 #B13975 #B1B139 #39B175

split-complementary

#3939B1 #B17539 #75B139

monochromatic

#1B1B54 #2A2A83 #3939B1 #5D5DCB #8B8BDA

Accessibility & contrast

On white

8.77

#3939B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#3939B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3939B1

8.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3939B1	#FFFFFF	#000000	##FFFFFF
##3939B1	1.00	8.77	2.39	8.77
#FFFFFF	8.77	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B5

Deuteranopia (green-blind)

#0045AF

Tritanopia (blue-blind)

#005970

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3939b1;
/* rgb */ color: rgb(57, 57, 177);
/* oklch */ color: oklch(42.8% 0.185 275.3);

Tailwind

colors: {
  custom: {
    50: '#7f70c9',
    500: '#3939b1',
    950: '#000000',
  },
}

SCSS

$custom: #3939b1;
$custom-light: #7f70c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3939b1",
  "rgb": {
    "r": 57,
    "g": 57,
    "b": 177
  },
  "hsl": {
    "h": 240,
    "s": 51.282,
    "l": 45.882
  },
  "oklch": {
    "l": 0.42754,
    "c": 0.18467,
    "h": 275.3
  },
  "luminance": 0.0697
}

Semantic roles & 50–950 ramp

primary

#3939B1

secondary

#C4C482

accent

#DB4DDB

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3939B1

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

Preview Lab → · Contrast checker → · Palette generator →