#3947A8#3947A8

#3947A8 is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.5% C 0.155 H 272.2°. Best body text is #FFFFFF at 7.95:1 contrast (WCAG AA passes).

Color values

HEX	#3947A8
RGB	rgb(57, 71, 168)
HSL	hsl(232, 49%, 44%)
HSV	hsv(232, 66%, 66%)
CMYK	cmyk(66.1%, 57.7%, 0%, 34.1%)
CIE-LAB	lab(34.40, 26.46, -53.96)
CIE-LCH	lch(34.40, 60.10, 296.12°)
OKLab	oklab(44.48% 0.0061 -0.1553)
OKLCH	oklch(44.48% 0.155 272.2)
XYZ	xyz(11.0061, 8.2025, 38.0414)
Luminance	0.0820 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3947A8 #A89A39

analogous

#397FA8 #3947A8 #6339A8

triadic

#3947A8 #A83947 #47A839

tetradic

#3947A8 #A8397F #A89A39 #39A863

square

#3947A8 #A8397F #A89A39 #39A863

split-complementary

#3947A8 #A86339 #7FA839

monochromatic

#1A204D #29347A #3947A8 #5866C6 #8690D6

Accessibility & contrast

On white

7.95

#3947A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#3947A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3947A8

7.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3947A8	#FFFFFF	#000000	##FFFFFF
##3947A8	1.00	7.95	2.64	7.95
#FFFFFF	7.95	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056AB

Deuteranopia (green-blind)

#004CA6

Tritanopia (blue-blind)

#005F70

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3947a8;
/* rgb */ color: rgb(57, 71, 168);
/* oklch */ color: oklch(44.5% 0.155 272.2);

Tailwind

colors: {
  custom: {
    50: '#7c7ac3',
    500: '#3947a8',
    950: '#000000',
  },
}

SCSS

$custom: #3947a8;
$custom-light: #7c7ac3;
$custom-dark: #000000;

JSON

{
  "hex": "#3947a8",
  "rgb": {
    "r": 57,
    "g": 71,
    "b": 168
  },
  "hsl": {
    "h": 232.432,
    "s": 49.333,
    "l": 44.118
  },
  "oklch": {
    "l": 0.44479,
    "c": 0.15538,
    "h": 272.2
  },
  "luminance": 0.08203
}

Semantic roles & 50–950 ramp

primary

#3947A8

secondary

#C0B77D

accent

#C74FD9

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0912

muted

#7C7B81

Preview Lab

Preview with #3947A8

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

Preview Lab → · Contrast checker → · Palette generator →