#3955C9#3955C9

#3955C9 is a mid, vivid blue. Relative luminance 0.116; OKLCH L 49.9% C 0.183 H 268.5°. Best body text is #FFFFFF at 6.33:1 contrast (WCAG AA passes).

Color values

HEX	#3955C9
RGB	rgb(57, 85, 201)
HSL	hsl(228, 57%, 51%)
HSV	hsv(228, 72%, 79%)
CMYK	cmyk(71.6%, 57.7%, 0%, 21.2%)
CIE-LAB	lab(40.54, 29.30, -63.38)
CIE-LCH	lch(40.54, 69.83, 294.81°)
OKLab	oklab(49.86% -0.0046 -0.1828)
OKLCH	oklch(49.86% 0.183 268.5)
XYZ	xyz(15.4748, 11.5823, 56.6671)
Luminance	0.1158 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3955C9 #C9AD39

analogous

#399DC9 #3955C9 #6539C9

triadic

#3955C9 #C93955 #55C939

tetradic

#3955C9 #C9399D #C9AD39 #39C965

square

#3955C9 #C9399D #C9AD39 #39C965

split-complementary

#3955C9 #C96539 #9DC939

monochromatic

#1D2C6B #2A409B #3955C9 #697ED6 #99A8E3

Accessibility & contrast

On white

6.33

#3955C9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.32

#3955C9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3955C9

6.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3955C9	#FFFFFF	#000000	##FFFFFF
##3955C9	1.00	6.33	3.32	6.33
#FFFFFF	6.33	1.00	21.00	1.00
#000000	3.32	21.00	1.00	21.00
##FFFFFF	6.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066CD

Deuteranopia (green-blind)

#0059C7

Tritanopia (blue-blind)

#007287

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #3955c9;
/* rgb */ color: rgb(57, 85, 201);
/* oklch */ color: oklch(49.9% 0.183 268.5);

Tailwind

colors: {
  custom: {
    50: '#8284da',
    500: '#3955c9',
    950: '#000000',
  },
}

SCSS

$custom: #3955c9;
$custom-light: #8284da;
$custom-dark: #000000;

JSON

{
  "hex": "#3955c9",
  "rgb": {
    "r": 57,
    "g": 85,
    "b": 201
  },
  "hsl": {
    "h": 228.333,
    "s": 57.143,
    "l": 50.588
  },
  "oklch": {
    "l": 0.49859,
    "c": 0.18284,
    "h": 268.5
  },
  "luminance": 0.11584
}

Semantic roles & 50–950 ramp

primary

#3955C9

secondary

#CFC28F

accent

#C347E0

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3955C9

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

Preview Lab → · Contrast checker → · Palette generator →