#3553D0#3553D0

#3553D0 is a mid, vivid blue. Relative luminance 0.115; OKLCH L 49.9% C 0.196 H 268.0°. Best body text is #FFFFFF at 6.36:1 contrast (WCAG AA passes).

Color values

HEX	#3553D0
RGB	rgb(53, 83, 208)
HSL	hsl(228, 62%, 51%)
HSV	hsv(228, 75%, 82%)
CMYK	cmyk(74.5%, 60.1%, 0%, 18.4%)
CIE-LAB	lab(40.40, 32.63, -67.66)
CIE-LCH	lch(40.40, 75.12, 295.75°)
OKLab	oklab(49.88% -0.0067 -0.1955)
OKLCH	oklch(49.88% 0.196 268)
XYZ	xyz(15.9427, 11.4957, 61.0410)
Luminance	0.1150 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3553D0 #D0B235

analogous

#35A0D0 #3553D0 #6435D0

triadic

#3553D0 #D03553 #53D035

tetradic

#3553D0 #D035A0 #D0B235 #35D064

square

#3553D0 #D035A0 #D0B235 #35D064

split-complementary

#3553D0 #D06435 #A0D035

monochromatic

#1A2B70 #263EA2 #3553D0 #677DDC #98A8E7

Accessibility & contrast

On white

6.36

#3553D0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#3553D0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3553D0

6.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3553D0	#FFFFFF	#000000	##FFFFFF
##3553D0	1.00	6.36	3.30	6.36
#FFFFFF	6.36	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0067D4

Deuteranopia (green-blind)

#0058CE

Tritanopia (blue-blind)

#007389

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3553d0;
/* rgb */ color: rgb(53, 83, 208);
/* oklch */ color: oklch(49.9% 0.196 268.0);

Tailwind

colors: {
  custom: {
    50: '#8283df',
    500: '#3553d0',
    950: '#000000',
  },
}

SCSS

$custom: #3553d0;
$custom-light: #8283df;
$custom-dark: #000000;

JSON

{
  "hex": "#3553d0",
  "rgb": {
    "r": 53,
    "g": 83,
    "b": 208
  },
  "hsl": {
    "h": 228.387,
    "s": 62.249,
    "l": 51.176
  },
  "oklch": {
    "l": 0.49875,
    "c": 0.19558,
    "h": 268
  },
  "luminance": 0.11497
}

Semantic roles & 50–950 ramp

primary

#3553D0

secondary

#D3C58E

accent

#C642E5

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3553D0

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

Preview Lab → · Contrast checker → · Palette generator →