#3955CB#3955CB

#3955CB is a mid, vivid blue. Relative luminance 0.117; OKLCH L 50.0% C 0.185 H 268.6°. Best body text is #FFFFFF at 6.30:1 contrast (WCAG AA passes).

Color values

HEX	#3955CB
RGB	rgb(57, 85, 203)
HSL	hsl(228, 58%, 51%)
HSV	hsv(228, 72%, 80%)
CMYK	cmyk(71.9%, 58.1%, 0%, 20.4%)
CIE-LAB	lab(40.70, 30.02, -64.29)
CIE-LCH	lch(40.70, 70.95, 295.03°)
OKLab	oklab(50.02% -0.0046 -0.1854)
OKLCH	oklch(50.02% 0.186 268.6)
XYZ	xyz(15.7116, 11.6770, 57.9142)
Luminance	0.1168 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3955CB #CBAF39

analogous

#399ECB #3955CB #6639CB

triadic

#3955CB #CB3955 #55CB39

tetradic

#3955CB #CB399E #CBAF39 #39CB66

square

#3955CB #CB399E #CBAF39 #39CB66

split-complementary

#3955CB #CB6639 #9ECB39

monochromatic

#1D2C6D #29409D #3955CB #697FD8 #9AA8E4

Accessibility & contrast

On white

6.30

#3955CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.34

#3955CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3955CB

6.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3955CB	#FFFFFF	#000000	##FFFFFF
##3955CB	1.00	6.30	3.34	6.30
#FFFFFF	6.30	1.00	21.00	1.00
#000000	3.34	21.00	1.00	21.00
##FFFFFF	6.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0067CF

Deuteranopia (green-blind)

#0059C9

Tritanopia (blue-blind)

#007288

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #3955cb;
/* rgb */ color: rgb(57, 85, 203);
/* oklch */ color: oklch(50.0% 0.185 268.6);

Tailwind

colors: {
  custom: {
    50: '#8384dc',
    500: '#3955cb',
    950: '#000000',
  },
}

SCSS

$custom: #3955cb;
$custom-light: #8384dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3955cb",
  "rgb": {
    "r": 57,
    "g": 85,
    "b": 203
  },
  "hsl": {
    "h": 228.493,
    "s": 58.4,
    "l": 50.98
  },
  "oklch": {
    "l": 0.50022,
    "c": 0.1855,
    "h": 268.6
  },
  "luminance": 0.11679
}

Semantic roles & 50–950 ramp

primary

#3955CB

secondary

#D0C490

accent

#C446E2

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3955CB

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

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