#3943B5#3943B5

#3943B5 is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.8% C 0.178 H 273.0°. Best body text is #FFFFFF at 7.94:1 contrast (WCAG AA passes).

Color values

HEX	#3943B5
RGB	rgb(57, 67, 181)
HSL	hsl(235, 52%, 47%)
HSV	hsv(235, 69%, 71%)
CMYK	cmyk(68.5%, 63%, 0%, 29%)
CIE-LAB	lab(34.44, 33.66, -61.64)
CIE-LCH	lch(34.44, 70.23, 298.64°)
OKLab	oklab(44.83% 0.0092 -0.1778)
OKLCH	oklch(44.83% 0.178 273)
XYZ	xyz(12.0322, 8.2192, 44.6595)
Luminance	0.0822 (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

#3943B5 #B5AB39

analogous

#3981B5 #3943B5 #6D39B5

triadic

#3943B5 #B53943 #43B539

tetradic

#3943B5 #B53981 #B5AB39 #39B56D

square

#3943B5 #B53981 #B5AB39 #39B56D

split-complementary

#3943B5 #B56D39 #81B539

monochromatic

#1C2158 #2A3286 #3943B5 #5F68CD #8D94DB

Accessibility & contrast

On white

7.94

#3943B5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#3943B5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3943B5

7.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3943B5	#FFFFFF	#000000	##FFFFFF
##3943B5	1.00	7.94	2.64	7.94
#FFFFFF	7.94	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057B9

Deuteranopia (green-blind)

#004BB3

Tritanopia (blue-blind)

#006075

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3943b5;
/* rgb */ color: rgb(57, 67, 181);
/* oklch */ color: oklch(44.8% 0.178 273.0);

Tailwind

colors: {
  custom: {
    50: '#7f77cc',
    500: '#3943b5',
    950: '#000000',
  },
}

SCSS

$custom: #3943b5;
$custom-light: #7f77cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3943b5",
  "rgb": {
    "r": 57,
    "g": 67,
    "b": 181
  },
  "hsl": {
    "h": 235.161,
    "s": 52.101,
    "l": 46.667
  },
  "oklch": {
    "l": 0.4483,
    "c": 0.17809,
    "h": 273
  },
  "luminance": 0.0822
}

Semantic roles & 50–950 ramp

primary

#3943B5

secondary

#C6C084

accent

#D04CDC

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3943B5

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

Preview Lab → · Contrast checker → · Palette generator →