#3939B7#3939B7

#3939B7 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.3% C 0.192 H 274.8°. Best body text is #FFFFFF at 8.60:1 contrast (WCAG AA passes).

Color values

HEX	#3939B7
RGB	rgb(57, 57, 183)
HSL	hsl(240, 53%, 47%)
HSV	hsv(240, 69%, 72%)
CMYK	cmyk(68.9%, 68.9%, 0%, 28.2%)
CIE-LAB	lab(32.29, 40.55, -66.34)
CIE-LCH	lch(32.29, 77.75, 301.43°)
OKLab	oklab(43.32% 0.0162 -0.1917)
OKLCH	oklch(43.32% 0.192 274.8)
XYZ	xyz(11.6949, 7.2139, 45.5667)
Luminance	0.0722 (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

#3939B7 #B7B739

analogous

#3978B7 #3939B7 #7839B7

triadic

#3939B7 #B73939 #39B739

tetradic

#3939B7 #B73978 #B7B739 #39B778

square

#3939B7 #B73978 #B7B739 #39B778

split-complementary

#3939B7 #B77839 #78B739

monochromatic

#1C1C5A #2A2A88 #3939B7 #6060CD #8E8EDC

Accessibility & contrast

On white

8.60

#3939B7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#3939B7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3939B7

8.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3939B7	#FFFFFF	#000000	##FFFFFF
##3939B7	1.00	8.60	2.44	8.60
#FFFFFF	8.60	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052BB

Deuteranopia (green-blind)

#0046B5

Tritanopia (blue-blind)

#005B73

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3939b7;
/* rgb */ color: rgb(57, 57, 183);
/* oklch */ color: oklch(43.3% 0.192 274.8);

Tailwind

colors: {
  custom: {
    50: '#8070ce',
    500: '#3939b7',
    950: '#000000',
  },
}

SCSS

$custom: #3939b7;
$custom-light: #8070ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3939b7",
  "rgb": {
    "r": 57,
    "g": 57,
    "b": 183
  },
  "hsl": {
    "h": 240,
    "s": 52.5,
    "l": 47.059
  },
  "oklch": {
    "l": 0.43321,
    "c": 0.19234,
    "h": 274.8
  },
  "luminance": 0.07215
}

Semantic roles & 50–950 ramp

primary

#3939B7

secondary

#C7C785

accent

#DC4CDC

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3939B7

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

Preview Lab → · Contrast checker → · Palette generator →