#3550BD#3550BD

#3550BD is a mid, vivid blue. Relative luminance 0.102; OKLCH L 47.7% C 0.174 H 268.4°. Best body text is #FFFFFF at 6.92:1 contrast (WCAG AA passes).

Color values

HEX	#3550BD
RGB	rgb(53, 80, 189)
HSL	hsl(228, 56%, 47%)
HSV	hsv(228, 72%, 74%)
CMYK	cmyk(72%, 57.7%, 0%, 25.9%)
CIE-LAB	lab(38.14, 27.64, -60.32)
CIE-LCH	lch(38.14, 66.35, 294.62°)
OKLab	oklab(47.72% -0.0049 -0.1739)
OKLCH	oklch(47.72% 0.174 268.4)
XYZ	xyz(13.5190, 10.1669, 49.3842)
Luminance	0.1017 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3550BD #BDA235

analogous

#3594BD #3550BD #5E35BD

triadic

#3550BD #BD3550 #50BD35

tetradic

#3550BD #BD3594 #BDA235 #35BD5E

square

#3550BD #BD3594 #BDA235 #35BD5E

split-complementary

#3550BD #BD5E35 #94BD35

monochromatic

#1A285D #283C8D #3550BD #5D75D2 #8D9EDF

Accessibility & contrast

On white

6.92

#3550BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.03

#3550BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3550BD

6.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3550BD	#FFFFFF	#000000	##FFFFFF
##3550BD	1.00	6.92	3.03	6.92
#FFFFFF	6.92	1.00	21.00	1.00
#000000	3.03	21.00	1.00	21.00
##FFFFFF	6.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060C1

Deuteranopia (green-blind)

#0054BB

Tritanopia (blue-blind)

#006B7E

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3550bd;
/* rgb */ color: rgb(53, 80, 189);
/* oklch */ color: oklch(47.7% 0.174 268.4);

Tailwind

colors: {
  custom: {
    50: '#7e80d2',
    500: '#3550bd',
    950: '#000000',
  },
}

SCSS

$custom: #3550bd;
$custom-light: #7e80d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3550bd",
  "rgb": {
    "r": 53,
    "g": 80,
    "b": 189
  },
  "hsl": {
    "h": 228.088,
    "s": 56.198,
    "l": 47.451
  },
  "oklch": {
    "l": 0.4772,
    "c": 0.17399,
    "h": 268.4
  },
  "luminance": 0.10168
}

Semantic roles & 50–950 ramp

primary

#3550BD

secondary

#CABC84

accent

#C148DF

background

#F8F7FD

surface

#EFEEFA

border

#CAC9D3

text

#0B0A14

muted

#7C7C83

Preview Lab

Preview with #3550BD

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

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