#3550BC#3550BC

#3550BC is a mid, vivid blue. Relative luminance 0.101; OKLCH L 47.6% C 0.173 H 268.4°. Best body text is #FFFFFF at 6.94:1 contrast (WCAG AA passes).

Color values

HEX	#3550BC
RGB	rgb(53, 80, 188)
HSL	hsl(228, 56%, 47%)
HSV	hsv(228, 72%, 74%)
CMYK	cmyk(71.8%, 57.4%, 0%, 26.3%)
CIE-LAB	lab(38.06, 27.27, -59.86)
CIE-LCH	lch(38.06, 65.78, 294.49°)
OKLab	oklab(47.64% -0.0049 -0.1726)
OKLCH	oklch(47.64% 0.173 268.4)
XYZ	xyz(13.4108, 10.1237, 48.8145)
Luminance	0.1013 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3550BC #BCA135

analogous

#3594BC #3550BC #5D35BC

triadic

#3550BC #BC3550 #50BC35

tetradic

#3550BC #BC3594 #BCA135 #35BC5D

square

#3550BC #BC3594 #BCA135 #35BC5D

split-complementary

#3550BC #BC5D35 #94BC35

monochromatic

#1A275D #283C8C #3550BC #5D74D1 #8D9DDF

Accessibility & contrast

On white

6.94

#3550BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.03

#3550BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3550BC

6.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3550BC	#FFFFFF	#000000	##FFFFFF
##3550BC	1.00	6.94	3.03	6.94
#FFFFFF	6.94	1.00	21.00	1.00
#000000	3.03	21.00	1.00	21.00
##FFFFFF	6.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060C0

Deuteranopia (green-blind)

#0054BA

Tritanopia (blue-blind)

#006B7E

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3550bc;
/* rgb */ color: rgb(53, 80, 188);
/* oklch */ color: oklch(47.6% 0.173 268.4);

Tailwind

colors: {
  custom: {
    50: '#7e80d1',
    500: '#3550bc',
    950: '#000000',
  },
}

SCSS

$custom: #3550bc;
$custom-light: #7e80d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3550bc",
  "rgb": {
    "r": 53,
    "g": 80,
    "b": 188
  },
  "hsl": {
    "h": 228,
    "s": 56.017,
    "l": 47.255
  },
  "oklch": {
    "l": 0.47639,
    "c": 0.17264,
    "h": 268.4
  },
  "luminance": 0.10125
}

Semantic roles & 50–950 ramp

primary

#3550BC

secondary

#C9BB84

accent

#C148DF

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3550BC

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

Preview Lab → · Contrast checker → · Palette generator →