#5BBBE5#5BBBE5

#5BBBE5 is a light, moderate cyan. Relative luminance 0.434; OKLCH L 75.0% C 0.108 H 229.3°. Best body text is #000000 at 9.68:1 contrast (WCAG AA passes).

Color values

HEX	#5BBBE5
RGB	rgb(91, 187, 229)
HSL	hsl(198, 73%, 63%)
HSV	hsv(198, 60%, 90%)
CMYK	cmyk(60.3%, 18.3%, 0%, 10.2%)
CIE-LAB	lab(71.84, -16.11, -29.46)
CIE-LCH	lch(71.84, 33.58, 241.34°)
OKLab	oklab(75.05% -0.0708 -0.0822)
OKLCH	oklch(75.05% 0.109 229.3)
XYZ	xyz(36.2221, 43.4184, 80.5852)
Luminance	0.4342 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5BBBE5 #E5855B

analogous

#5BE5CA #5BBBE5 #5B76E5

triadic

#5BBBE5 #E55BBB #BBE55B

tetradic

#5BBBE5 #CA5BE5 #E5855B #76E55B

square

#5BBBE5 #CA5BE5 #E5855B #76E55B

split-complementary

#5BBBE5 #E55B76 #E5CA5B

monochromatic

#1B7FAB #26A5DD #5BBBE5 #90D1ED #C5E7F6

Accessibility & contrast

On white

2.17

#5BBBE5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.68

#5BBBE5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5BBBE5

9.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5BBBE5	#FFFFFF	#000000	##000000
##5BBBE5	1.00	2.17	9.68	9.68
#FFFFFF	2.17	1.00	21.00	21.00
#000000	9.68	21.00	1.00	1.00
##000000	9.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A5B8E7

Deuteranopia (green-blind)

#92AAE4

Tritanopia (blue-blind)

#00C7C9

Achromatopsia (no color)

#B0B0B0

Design tokens & code

CSS

--color: #5bbbe5;
/* rgb */ color: rgb(91, 187, 229);
/* oklch */ color: oklch(75.0% 0.108 229.3);

Tailwind

colors: {
  custom: {
    50: '#95cfed',
    500: '#5bbbe5',
    950: '#000000',
  },
}

SCSS

$custom: #5bbbe5;
$custom-light: #95cfed;
$custom-dark: #000000;

JSON

{
  "hex": "#5bbbe5",
  "rgb": {
    "r": 91,
    "g": 187,
    "b": 229
  },
  "hsl": {
    "h": 198.261,
    "s": 72.632,
    "l": 62.745
  },
  "oklch": {
    "l": 0.7505,
    "c": 0.1085,
    "h": 229.3
  },
  "luminance": 0.43422
}

Semantic roles & 50–950 ramp

primary

#5BBBE5

secondary

#E7C4B5

accent

#4C11D5

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #5BBBE5

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

Preview Lab → · Contrast checker → · Palette generator →