#3948B4#3948B4

#3948B4 is a mid, vivid blue. Relative luminance 0.088; OKLCH L 45.7% C 0.171 H 271.8°. Best body text is #FFFFFF at 7.61:1 contrast (WCAG AA passes).

Color values

HEX	#3948B4
RGB	rgb(57, 72, 180)
HSL	hsl(233, 52%, 46%)
HSV	hsv(233, 68%, 71%)
CMYK	cmyk(68.3%, 60%, 0%, 29.4%)
CIE-LAB	lab(35.59, 30.11, -59.16)
CIE-LCH	lch(35.59, 66.38, 296.97°)
OKLab	oklab(45.66% 0.0053 -0.1705)
OKLCH	oklch(45.66% 0.171 271.8)
XYZ	xyz(12.2401, 8.7987, 44.2244)
Luminance	0.0880 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3948B4 #B4A539

analogous

#3986B4 #3948B4 #6839B4

triadic

#3948B4 #B43948 #48B439

tetradic

#3948B4 #B43986 #B4A539 #39B468

square

#3948B4 #B43986 #B4A539 #39B468

split-complementary

#3948B4 #B46839 #86B439

monochromatic

#1C2357 #2A3586 #3948B4 #5E6CCC #8D96DB

Accessibility & contrast

On white

7.61

#3948B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.76

#3948B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3948B4

7.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3948B4	#FFFFFF	#000000	##FFFFFF
##3948B4	1.00	7.61	2.76	7.61
#FFFFFF	7.61	1.00	21.00	1.00
#000000	2.76	21.00	1.00	21.00
##FFFFFF	7.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059B8

Deuteranopia (green-blind)

#004EB2

Tritanopia (blue-blind)

#006377

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #3948b4;
/* rgb */ color: rgb(57, 72, 180);
/* oklch */ color: oklch(45.7% 0.171 271.8);

Tailwind

colors: {
  custom: {
    50: '#7f7acb',
    500: '#3948b4',
    950: '#000000',
  },
}

SCSS

$custom: #3948b4;
$custom-light: #7f7acb;
$custom-dark: #000000;

JSON

{
  "hex": "#3948b4",
  "rgb": {
    "r": 57,
    "g": 72,
    "b": 180
  },
  "hsl": {
    "h": 232.683,
    "s": 51.899,
    "l": 46.471
  },
  "oklch": {
    "l": 0.4566,
    "c": 0.1706,
    "h": 271.8
  },
  "luminance": 0.088
}

Semantic roles & 50–950 ramp

primary

#3948B4

secondary

#C5BD83

accent

#CA4CDB

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3948B4

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

Preview Lab → · Contrast checker → · Palette generator →