#3954BB#3954BB

#3954BB is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.5% C 0.165 H 268.5°. Best body text is #FFFFFF at 6.65:1 contrast (WCAG AA passes).

Color values

HEX	#3954BB
RGB	rgb(57, 84, 187)
HSL	hsl(228, 53%, 48%)
HSV	hsv(228, 70%, 73%)
CMYK	cmyk(69.5%, 55.1%, 0%, 26.7%)
CIE-LAB	lab(39.24, 24.86, -57.36)
CIE-LCH	lch(39.24, 62.51, 293.43°)
OKLab	oklab(48.55% -0.0044 -0.1651)
OKLCH	oklch(48.55% 0.165 268.5)
XYZ	xyz(13.8242, 10.7970, 48.3596)
Luminance	0.1080 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3954BB #BBA039

analogous

#3995BB #3954BB #5F39BB

triadic

#3954BB #BB3954 #54BB39

tetradic

#3954BB #BB3995 #BBA039 #39BB5F

square

#3954BB #BB3995 #BBA039 #39BB5F

split-complementary

#3954BB #BB5F39 #95BB39

monochromatic

#1C2A5D #2B3F8C #3954BB #6279CF #91A1DD

Accessibility & contrast

On white

6.65

#3954BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#3954BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3954BB

6.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3954BB	#FFFFFF	#000000	##FFFFFF
##3954BB	1.00	6.65	3.16	6.65
#FFFFFF	6.65	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063BF

Deuteranopia (green-blind)

#0057B9

Tritanopia (blue-blind)

#006D7F

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3954bb;
/* rgb */ color: rgb(57, 84, 187);
/* oklch */ color: oklch(48.5% 0.165 268.5);

Tailwind

colors: {
  custom: {
    50: '#7f83d0',
    500: '#3954bb',
    950: '#000000',
  },
}

SCSS

$custom: #3954bb;
$custom-light: #7f83d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3954bb",
  "rgb": {
    "r": 57,
    "g": 84,
    "b": 187
  },
  "hsl": {
    "h": 227.538,
    "s": 53.279,
    "l": 47.843
  },
  "oklch": {
    "l": 0.48548,
    "c": 0.16514,
    "h": 268.5
  },
  "luminance": 0.10798
}

Semantic roles & 50–950 ramp

primary

#3954BB

secondary

#C8BB87

accent

#BE4BDD

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3954BB

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

Preview Lab → · Contrast checker → · Palette generator →