#3955BB#3955BB

#3955BB is a mid, vivid blue. Relative luminance 0.110; OKLCH L 48.7% C 0.164 H 268.2°. Best body text is #FFFFFF at 6.58:1 contrast (WCAG AA passes).

Color values

HEX	#3955BB
RGB	rgb(57, 85, 187)
HSL	hsl(227, 53%, 48%)
HSV	hsv(227, 70%, 73%)
CMYK	cmyk(69.5%, 54.5%, 0%, 26.7%)
CIE-LAB	lab(39.50, 24.21, -56.93)
CIE-LCH	lch(39.50, 61.86, 293.04°)
OKLab	oklab(48.75% -0.0053 -0.1638)
OKLCH	oklch(48.75% 0.164 268.2)
XYZ	xyz(13.9024, 10.9533, 48.3856)
Luminance	0.1095 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3955BB #BB9F39

analogous

#3996BB #3955BB #5E39BB

triadic

#3955BB #BB3955 #55BB39

tetradic

#3955BB #BB3996 #BB9F39 #39BB5E

square

#3955BB #BB3996 #BB9F39 #39BB5E

split-complementary

#3955BB #BB5E39 #96BB39

monochromatic

#1C2A5D #2B408C #3955BB #627ACF #91A1DD

Accessibility & contrast

On white

6.58

#3955BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#3955BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3955BB

6.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3955BB	#FFFFFF	#000000	##FFFFFF
##3955BB	1.00	6.58	3.19	6.58
#FFFFFF	6.58	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063BF

Deuteranopia (green-blind)

#0057B9

Tritanopia (blue-blind)

#006E7F

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3955bb;
/* rgb */ color: rgb(57, 85, 187);
/* oklch */ color: oklch(48.7% 0.164 268.2);

Tailwind

colors: {
  custom: {
    50: '#7f84d0',
    500: '#3955bb',
    950: '#000000',
  },
}

SCSS

$custom: #3955bb;
$custom-light: #7f84d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3955bb",
  "rgb": {
    "r": 57,
    "g": 85,
    "b": 187
  },
  "hsl": {
    "h": 227.077,
    "s": 53.279,
    "l": 47.843
  },
  "oklch": {
    "l": 0.48748,
    "c": 0.16388,
    "h": 268.2
  },
  "luminance": 0.10955
}

Semantic roles & 50–950 ramp

primary

#3955BB

secondary

#C8BA87

accent

#BD4BDD

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3955BB

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

Preview Lab → · Contrast checker → · Palette generator →