#3939B3#3939B3

#3939B3 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.9% C 0.187 H 275.1°. Best body text is #FFFFFF at 8.71:1 contrast (WCAG AA passes).

Color values

HEX	#3939B3
RGB	rgb(57, 57, 179)
HSL	hsl(240, 52%, 46%)
HSV	hsv(240, 68%, 70%)
CMYK	cmyk(68.2%, 68.2%, 0%, 29.8%)
CIE-LAB	lab(31.92, 39.19, -64.57)
CIE-LCH	lch(31.92, 75.54, 301.26°)
OKLab	oklab(42.94% 0.0167 -0.1865)
OKLCH	oklch(42.94% 0.187 275.1)
XYZ	xyz(11.2845, 7.0498, 43.4051)
Luminance	0.0705 (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

#3939B3 #B3B339

analogous

#3976B3 #3939B3 #7639B3

triadic

#3939B3 #B33939 #39B339

tetradic

#3939B3 #B33976 #B3B339 #39B376

square

#3939B3 #B33976 #B3B339 #39B376

split-complementary

#3939B3 #B37639 #76B339

monochromatic

#1B1B56 #2A2A85 #3939B3 #5E5ECC #8C8CDA

Accessibility & contrast

On white

8.71

#3939B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#3939B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3939B3

8.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3939B3	#FFFFFF	#000000	##FFFFFF
##3939B3	1.00	8.71	2.41	8.71
#FFFFFF	8.71	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B7

Deuteranopia (green-blind)

#0045B1

Tritanopia (blue-blind)

#005A71

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3939b3;
/* rgb */ color: rgb(57, 57, 179);
/* oklch */ color: oklch(42.9% 0.187 275.1);

Tailwind

colors: {
  custom: {
    50: '#8070cb',
    500: '#3939b3',
    950: '#000000',
  },
}

SCSS

$custom: #3939b3;
$custom-light: #8070cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3939b3",
  "rgb": {
    "r": 57,
    "g": 57,
    "b": 179
  },
  "hsl": {
    "h": 240,
    "s": 51.695,
    "l": 46.275
  },
  "oklch": {
    "l": 0.42942,
    "c": 0.18724,
    "h": 275.1
  },
  "luminance": 0.07051
}

Semantic roles & 50–950 ramp

primary

#3939B3

secondary

#C5C583

accent

#DB4DDB

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3939B3

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

Preview Lab → · Contrast checker → · Palette generator →