#3550B9#3550B9

#3550B9 is a mid, vivid blue. Relative luminance 0.100; OKLCH L 47.4% C 0.169 H 268.3°. Best body text is #FFFFFF at 7.00:1 contrast (WCAG AA passes).

Color values

HEX	#3550B9
RGB	rgb(53, 80, 185)
HSL	hsl(228, 55%, 47%)
HSV	hsv(228, 71%, 73%)
CMYK	cmyk(71.4%, 56.8%, 0%, 27.5%)
CIE-LAB	lab(37.83, 26.17, -58.47)
CIE-LCH	lch(37.83, 64.06, 294.11°)
OKLab	oklab(47.4% -0.005 -0.1685)
OKLCH	oklch(47.4% 0.169 268.3)
XYZ	xyz(13.0908, 9.9957, 47.1290)
Luminance	0.1000 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3550B9 #B99E35

analogous

#3592B9 #3550B9 #5C35B9

triadic

#3550B9 #B93550 #50B935

tetradic

#3550B9 #B93592 #B99E35 #35B95C

square

#3550B9 #B93592 #B99E35 #35B95C

split-complementary

#3550B9 #B95C35 #92B935

monochromatic

#1A275A #273B89 #3550B9 #5B73D0 #8B9CDE

Accessibility & contrast

On white

7.00

#3550B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

3.00

#3550B9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3550B9

7.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3550B9	#FFFFFF	#000000	##FFFFFF
##3550B9	1.00	7.00	3.00	7.00
#FFFFFF	7.00	1.00	21.00	1.00
#000000	3.00	21.00	1.00	21.00
##FFFFFF	7.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FBD

Deuteranopia (green-blind)

#0053B7

Tritanopia (blue-blind)

#006A7C

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3550b9;
/* rgb */ color: rgb(53, 80, 185);
/* oklch */ color: oklch(47.4% 0.169 268.3);

Tailwind

colors: {
  custom: {
    50: '#7d80cf',
    500: '#3550b9',
    950: '#000000',
  },
}

SCSS

$custom: #3550b9;
$custom-light: #7d80cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3550b9",
  "rgb": {
    "r": 53,
    "g": 80,
    "b": 185
  },
  "hsl": {
    "h": 227.727,
    "s": 55.462,
    "l": 46.667
  },
  "oklch": {
    "l": 0.47395,
    "c": 0.16856,
    "h": 268.3
  },
  "luminance": 0.09997
}

Semantic roles & 50–950 ramp

primary

#3550B9

secondary

#C8BA82

accent

#C049DF

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3550B9

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

Preview Lab → · Contrast checker → · Palette generator →