#5551BB#5551BB

#5551BB is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.8% C 0.162 H 280.4°. Best body text is #FFFFFF at 6.40:1 contrast (WCAG AA passes).

Color values

HEX	#5551BB
RGB	rgb(85, 81, 187)
HSL	hsl(242, 44%, 53%)
HSV	hsv(242, 57%, 73%)
CMYK	cmyk(54.5%, 56.7%, 0%, 26.7%)
CIE-LAB	lab(40.25, 31.62, -55.63)
CIE-LCH	lch(40.25, 63.99, 299.61°)
OKLab	oklab(49.77% 0.0293 -0.1593)
OKLCH	oklch(49.77% 0.162 280.4)
XYZ	xyz(15.6556, 11.4030, 48.3801)
Luminance	0.1140 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5551BB #B7BB51

analogous

#5182BB #5551BB #8A51BB

triadic

#5551BB #BB5551 #51BB55

tetradic

#5551BB #BB5182 #B7BB51 #51BB8A

square

#5551BB #BB5182 #B7BB51 #51BB8A

split-complementary

#5551BB #BB8A51 #82BB51

monochromatic

#2B2969 #3E3A95 #5551BB #807DCC #ABA9DD

Accessibility & contrast

On white

6.40

#5551BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#5551BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5551BB

6.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5551BB	#FFFFFF	#000000	##FFFFFF
##5551BB	1.00	6.40	3.28	6.40
#FFFFFF	6.40	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063BF

Deuteranopia (green-blind)

#005BB9

Tritanopia (blue-blind)

#256A7E

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #5551bb;
/* rgb */ color: rgb(85, 81, 187);
/* oklch */ color: oklch(49.8% 0.162 280.4);

Tailwind

colors: {
  custom: {
    50: '#8d82d0',
    500: '#5551bb',
    950: '#000000',
  },
}

SCSS

$custom: #5551bb;
$custom-light: #8d82d0;
$custom-dark: #000000;

JSON

{
  "hex": "#5551bb",
  "rgb": {
    "r": 85,
    "g": 81,
    "b": 187
  },
  "hsl": {
    "h": 242.264,
    "s": 43.802,
    "l": 52.549
  },
  "oklch": {
    "l": 0.49771,
    "c": 0.162,
    "h": 280.4
  },
  "luminance": 0.11404
}

Semantic roles & 50–950 ramp

primary

#5551BB

secondary

#C9CB9D

accent

#D454CF

background

#F9F7FC

surface

#F1EEF9

border

#CBC9D2

text

#0D0A14

muted

#7E7C82

Preview Lab

Preview with #5551BB

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

Preview Lab → · Contrast checker → · Palette generator →