#5591BB#5591BB

#5591BB is a light, moderate cyan. Relative luminance 0.258; OKLCH L 63.3% C 0.089 H 240.7°. Best body text is #000000 at 6.15:1 contrast (WCAG AA passes).

Color values

HEX	#5591BB
RGB	rgb(85, 145, 187)
HSL	hsl(205, 43%, 53%)
HSV	hsv(205, 55%, 73%)
CMYK	cmyk(54.5%, 22.5%, 0%, 26.7%)
CIE-LAB	lab(57.82, -7.33, -27.82)
CIE-LCH	lch(57.82, 28.77, 255.24°)
OKLab	oklab(63.3% -0.0437 -0.0777)
OKLCH	oklch(63.3% 0.089 240.7)
XYZ	xyz(22.8381, 25.7680, 50.7743)
Luminance	0.2577 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5591BB #BB7F55

analogous

#55BBB2 #5591BB #555EBB

triadic

#5591BB #BB5591 #91BB55

tetradic

#5591BB #B255BB #BB7F55 #5EBB55

square

#5591BB #B255BB #BB7F55 #5EBB55

split-complementary

#5591BB #BB555E #BBB255

monochromatic

#2B506B #3C7197 #5591BB #81ADCC #ACCADE

Accessibility & contrast

On white

3.41

#5591BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.15

#5591BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5591BB

6.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5591BB	#FFFFFF	#000000	##000000
##5591BB	1.00	3.41	6.15	6.15
#FFFFFF	3.41	1.00	21.00	21.00
#000000	6.15	21.00	1.00	1.00
##000000	6.15	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7E91BD

Deuteranopia (green-blind)

#7186BA

Tritanopia (blue-blind)

#0B9B9F

Achromatopsia (no color)

#8B8B8B

Design tokens & code

CSS

--color: #5591bb;
/* rgb */ color: rgb(85, 145, 187);
/* oklch */ color: oklch(63.3% 0.089 240.7);

Tailwind

colors: {
  custom: {
    50: '#8cb1cf',
    500: '#5591bb',
    950: '#000000',
  },
}

SCSS

$custom: #5591bb;
$custom-light: #8cb1cf;
$custom-dark: #000000;

JSON

{
  "hex": "#5591bb",
  "rgb": {
    "r": 85,
    "g": 145,
    "b": 187
  },
  "hsl": {
    "h": 204.706,
    "s": 42.857,
    "l": 53.333
  },
  "oklch": {
    "l": 0.63303,
    "c": 0.08915,
    "h": 240.7
  },
  "luminance": 0.2577
}

Semantic roles & 50–950 ramp

primary

#5591BB

secondary

#CCB2A0

accent

#8955D3

background

#F8FAFC

surface

#F0F5F9

border

#CBCFD2

text

#0D1014

muted

#7D7F82

Preview Lab

Preview with #5591BB

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

Preview Lab → · Contrast checker → · Palette generator →