#3553CD#3553CD

#3553CD is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.6% C 0.192 H 268.0°. Best body text is #FFFFFF at 6.42:1 contrast (WCAG AA passes).

Color values

HEX	#3553CD
RGB	rgb(53, 83, 205)
HSL	hsl(228, 60%, 51%)
HSV	hsv(228, 74%, 80%)
CMYK	cmyk(74.1%, 59.5%, 0%, 19.6%)
CIE-LAB	lab(40.16, 31.54, -66.33)
CIE-LCH	lch(40.16, 73.44, 295.43°)
OKLab	oklab(49.62% -0.0067 -0.1915)
OKLCH	oklch(49.62% 0.192 268)
XYZ	xyz(15.5771, 11.3495, 59.1155)
Luminance	0.1135 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3553CD #CDAF35

analogous

#359FCD #3553CD #6335CD

triadic

#3553CD #CD3553 #53CD35

tetradic

#3553CD #CD359F #CDAF35 #35CD63

square

#3553CD #CD359F #CDAF35 #35CD63

split-complementary

#3553CD #CD6335 #9FCD35

monochromatic

#1B2B6D #273E9E #3553CD #667DD9 #97A7E5

Accessibility & contrast

On white

6.42

#3553CD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.27

#3553CD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3553CD

6.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3553CD	#FFFFFF	#000000	##FFFFFF
##3553CD	1.00	6.42	3.27	6.42
#FFFFFF	6.42	1.00	21.00	1.00
#000000	3.27	21.00	1.00	21.00
##FFFFFF	6.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066D1

Deuteranopia (green-blind)

#0058CB

Tritanopia (blue-blind)

#007288

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3553cd;
/* rgb */ color: rgb(53, 83, 205);
/* oklch */ color: oklch(49.6% 0.192 268.0);

Tailwind

colors: {
  custom: {
    50: '#8283dd',
    500: '#3553cd',
    950: '#000000',
  },
}

SCSS

$custom: #3553cd;
$custom-light: #8283dd;
$custom-dark: #000000;

JSON

{
  "hex": "#3553cd",
  "rgb": {
    "r": 53,
    "g": 83,
    "b": 205
  },
  "hsl": {
    "h": 228.158,
    "s": 60.317,
    "l": 50.588
  },
  "oklch": {
    "l": 0.49621,
    "c": 0.19165,
    "h": 268
  },
  "luminance": 0.11351
}

Semantic roles & 50–950 ramp

primary

#3553CD

secondary

#D1C38D

accent

#C444E3

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3553CD

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

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