#3555B2#3555B2

#3555B2 is a mid, vivid blue. Relative luminance 0.105; OKLCH L 47.9% C 0.153 H 266.4°. Best body text is #FFFFFF at 6.79:1 contrast (WCAG AA passes).

Color values

HEX	#3555B2
RGB	rgb(53, 85, 178)
HSL	hsl(225, 54%, 45%)
HSV	hsv(225, 70%, 70%)
CMYK	cmyk(70.2%, 52.2%, 0%, 30.2%)
CIE-LAB	lab(38.67, 20.32, -53.00)
CIE-LCH	lch(38.67, 56.76, 290.97°)
OKLab	oklab(47.86% -0.0097 -0.1523)
OKLCH	oklch(47.86% 0.153 266.4)
XYZ	xyz(12.7498, 10.4669, 43.4592)
Luminance	0.1047 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3555B2 #B29235

analogous

#3593B2 #3555B2 #5335B2

triadic

#3555B2 #B23555 #55B235

tetradic

#3555B2 #B23593 #B29235 #35B253

square

#3555B2 #B23593 #B29235 #35B253

split-complementary

#3555B2 #B25335 #93B235

monochromatic

#192854 #273E83 #3555B2 #5775CD #869CDB

Accessibility & contrast

On white

6.79

#3555B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#3555B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3555B2

6.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3555B2	#FFFFFF	#000000	##FFFFFF
##3555B2	1.00	6.79	3.09	6.79
#FFFFFF	6.79	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1961B5

Deuteranopia (green-blind)

#0056B0

Tritanopia (blue-blind)

#006B7B

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3555b2;
/* rgb */ color: rgb(53, 85, 178);
/* oklch */ color: oklch(47.9% 0.153 266.4);

Tailwind

colors: {
  custom: {
    50: '#7c84ca',
    500: '#3555b2',
    950: '#000000',
  },
}

SCSS

$custom: #3555b2;
$custom-light: #7c84ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3555b2",
  "rgb": {
    "r": 53,
    "g": 85,
    "b": 178
  },
  "hsl": {
    "h": 224.64,
    "s": 54.113,
    "l": 45.294
  },
  "oklch": {
    "l": 0.47862,
    "c": 0.15263,
    "h": 266.4
  },
  "luminance": 0.10468
}

Semantic roles & 50–950 ramp

primary

#3555B2

secondary

#C5B37E

accent

#B84ADD

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3555B2

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

Preview Lab → · Contrast checker → · Palette generator →