#3947B2#3947B2

#3947B2 is a mid, vivid blue. Relative luminance 0.086; OKLCH L 45.3% C 0.169 H 272.1°. Best body text is #FFFFFF at 7.73:1 contrast (WCAG AA passes).

Color values

HEX	#3947B2
RGB	rgb(57, 71, 178)
HSL	hsl(233, 51%, 46%)
HSV	hsv(233, 68%, 70%)
CMYK	cmyk(68%, 60.1%, 0%, 30.2%)
CIE-LAB	lab(35.18, 30.04, -58.65)
CIE-LCH	lch(35.18, 65.89, 297.12°)
OKLab	oklab(45.31% 0.0062 -0.169)
OKLCH	oklch(45.31% 0.169 272.1)
XYZ	xyz(11.9738, 8.5896, 43.1378)
Luminance	0.0859 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3947B2 #B2A439

analogous

#3983B2 #3947B2 #6739B2

triadic

#3947B2 #B23947 #47B239

tetradic

#3947B2 #B23983 #B2A439 #39B267

square

#3947B2 #B23983 #B2A439 #39B267

split-complementary

#3947B2 #B26739 #83B239

monochromatic

#1B2255 #2A3584 #3947B2 #5D6ACB #8B95DA

Accessibility & contrast

On white

7.73

#3947B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#3947B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3947B2

7.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3947B2	#FFFFFF	#000000	##FFFFFF
##3947B2	1.00	7.73	2.72	7.73
#FFFFFF	7.73	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B6

Deuteranopia (green-blind)

#004DB0

Tritanopia (blue-blind)

#006275

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #3947b2;
/* rgb */ color: rgb(57, 71, 178);
/* oklch */ color: oklch(45.3% 0.169 272.1);

Tailwind

colors: {
  custom: {
    50: '#7e7aca',
    500: '#3947b2',
    950: '#000000',
  },
}

SCSS

$custom: #3947b2;
$custom-light: #7e7aca;
$custom-dark: #000000;

JSON

{
  "hex": "#3947b2",
  "rgb": {
    "r": 57,
    "g": 71,
    "b": 178
  },
  "hsl": {
    "h": 233.058,
    "s": 51.489,
    "l": 46.078
  },
  "oklch": {
    "l": 0.45305,
    "c": 0.16914,
    "h": 272.1
  },
  "luminance": 0.08591
}

Semantic roles & 50–950 ramp

primary

#3947B2

secondary

#C4BD82

accent

#CB4DDB

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3947B2

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

Preview Lab → · Contrast checker → · Palette generator →