#3943A4#3943A4

#3943A4 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.4% C 0.155 H 273.6°. Best body text is #FFFFFF at 8.36:1 contrast (WCAG AA passes).

Color values

HEX	#3943A4
RGB	rgb(57, 67, 164)
HSL	hsl(234, 48%, 43%)
HSV	hsv(234, 65%, 64%)
CMYK	cmyk(65.2%, 59.1%, 0%, 35.7%)
CIE-LAB	lab(33.06, 27.64, -53.75)
CIE-LCH	lch(33.06, 60.44, 297.22°)
OKLab	oklab(43.38% 0.0097 -0.1547)
OKLCH	oklch(43.38% 0.155 273.6)
XYZ	xyz(10.3931, 7.5636, 36.0270)
Luminance	0.0756 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3943A4 #A49A39

analogous

#3978A4 #3943A4 #6539A4

triadic

#3943A4 #A43943 #43A439

tetradic

#3943A4 #A43978 #A49A39 #39A465

square

#3943A4 #A43978 #A49A39 #39A465

split-complementary

#3943A4 #A46539 #78A439

monochromatic

#191E49 #293077 #3943A4 #5660C4 #838BD4

Accessibility & contrast

On white

8.36

#3943A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#3943A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3943A4

8.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3943A4	#FFFFFF	#000000	##FFFFFF
##3943A4	1.00	8.36	2.51	8.36
#FFFFFF	8.36	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053A7

Deuteranopia (green-blind)

#0049A2

Tritanopia (blue-blind)

#005B6D

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3943a4;
/* rgb */ color: rgb(57, 67, 164);
/* oklch */ color: oklch(43.4% 0.155 273.6);

Tailwind

colors: {
  custom: {
    50: '#7c77c0',
    500: '#3943a4',
    950: '#000000',
  },
}

SCSS

$custom: #3943a4;
$custom-light: #7c77c0;
$custom-dark: #000000;

JSON

{
  "hex": "#3943a4",
  "rgb": {
    "r": 57,
    "g": 67,
    "b": 164
  },
  "hsl": {
    "h": 234.393,
    "s": 48.416,
    "l": 43.333
  },
  "oklch": {
    "l": 0.43382,
    "c": 0.15498,
    "h": 273.6
  },
  "luminance": 0.07565
}

Semantic roles & 50–950 ramp

primary

#3943A4

secondary

#BEB87B

accent

#CB50D8

background

#F8F7FB

surface

#EFEDF7

border

#CAC8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #3943A4

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

Preview Lab → · Contrast checker → · Palette generator →