#3355BC#3355BC

#3355BC is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.5% C 0.167 H 266.4°. Best body text is #FFFFFF at 6.63:1 contrast (WCAG AA passes).

Color values

HEX	#3355BC
RGB	rgb(51, 85, 188)
HSL	hsl(225, 57%, 47%)
HSV	hsv(225, 73%, 74%)
CMYK	cmyk(72.9%, 54.8%, 0%, 26.3%)
CIE-LAB	lab(39.29, 23.75, -57.87)
CIE-LCH	lch(39.29, 62.55, 292.31°)
OKLab	oklab(48.54% -0.0106 -0.1667)
OKLCH	oklch(48.54% 0.167 266.4)
XYZ	xyz(13.6877, 10.8302, 48.9363)
Luminance	0.1083 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3355BC #BC9A33

analogous

#339ABC #3355BC #5533BC

triadic

#3355BC #BC3355 #55BC33

tetradic

#3355BC #BC339A #BC9A33 #33BC55

square

#3355BC #BC339A #BC9A33 #33BC55

split-complementary

#3355BC #BC5533 #9ABC33

monochromatic

#19295C #263F8C #3355BC #5A78D2 #8A9FDF

Accessibility & contrast

On white

6.63

#3355BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.17

#3355BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3355BC

6.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3355BC	#FFFFFF	#000000	##FFFFFF
##3355BC	1.00	6.63	3.17	6.63
#FFFFFF	6.63	1.00	21.00	1.00
#000000	3.17	21.00	1.00	21.00
##FFFFFF	6.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063C0

Deuteranopia (green-blind)

#0057BA

Tritanopia (blue-blind)

#006E80

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3355bc;
/* rgb */ color: rgb(51, 85, 188);
/* oklch */ color: oklch(48.5% 0.167 266.4);

Tailwind

colors: {
  custom: {
    50: '#7d84d1',
    500: '#3355bc',
    950: '#000000',
  },
}

SCSS

$custom: #3355bc;
$custom-light: #7d84d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3355bc",
  "rgb": {
    "r": 51,
    "g": 85,
    "b": 188
  },
  "hsl": {
    "h": 225.109,
    "s": 57.322,
    "l": 46.863
  },
  "oklch": {
    "l": 0.48537,
    "c": 0.16702,
    "h": 266.4
  },
  "luminance": 0.10832
}

Semantic roles & 50–950 ramp

primary

#3355BC

secondary

#C9B881

accent

#BB47E1

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3355BC

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

Preview Lab → · Contrast checker → · Palette generator →