#5BBBE9#5BBBE9

#5BBBE9 is a light, moderate cyan. Relative luminance 0.436; OKLCH L 75.2% C 0.112 H 231.7°. Best body text is #000000 at 9.73:1 contrast (WCAG AA passes).

Color values

HEX	#5BBBE9
RGB	rgb(91, 187, 233)
HSL	hsl(199, 76%, 64%)
HSV	hsv(199, 61%, 91%)
CMYK	cmyk(60.9%, 19.7%, 0%, 8.6%)
CIE-LAB	lab(71.99, -14.89, -31.40)
CIE-LCH	lch(71.99, 34.75, 244.64°)
OKLab	oklab(75.22% -0.0694 -0.0878)
OKLCH	oklch(75.22% 0.112 231.7)
XYZ	xyz(36.7870, 43.6443, 83.5605)
Luminance	0.4365 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5BBBE9 #E9895B

analogous

#5BE9D0 #5BBBE9 #5B74E9

triadic

#5BBBE9 #E95BBB #BBE95B

tetradic

#5BBBE9 #D05BE9 #E9895B #74E95B

square

#5BBBE9 #D05BE9 #E9895B #74E95B

split-complementary

#5BBBE9 #E95B74 #E9D05B

monochromatic

#1880B2 #25A5E2 #5BBBE9 #91D1F0 #C7E8F7

Accessibility & contrast

On white

2.16

#5BBBE9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.73

#5BBBE9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5BBBE9

9.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5BBBE9	#FFFFFF	#000000	##000000
##5BBBE9	1.00	2.16	9.73	9.73
#FFFFFF	2.16	1.00	21.00	21.00
#000000	9.73	21.00	1.00	1.00
##000000	9.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A4B9EB

Deuteranopia (green-blind)

#90AAE8

Tritanopia (blue-blind)

#00C8CA

Achromatopsia (no color)

#B0B0B0

Design tokens & code

CSS

--color: #5bbbe9;
/* rgb */ color: rgb(91, 187, 233);
/* oklch */ color: oklch(75.2% 0.112 231.7);

Tailwind

colors: {
  custom: {
    50: '#96cff0',
    500: '#5bbbe9',
    950: '#000000',
  },
}

SCSS

$custom: #5bbbe9;
$custom-light: #96cff0;
$custom-dark: #000000;

JSON

{
  "hex": "#5bbbe9",
  "rgb": {
    "r": 91,
    "g": 187,
    "b": 233
  },
  "hsl": {
    "h": 199.437,
    "s": 76.344,
    "l": 63.529
  },
  "oklch": {
    "l": 0.75221,
    "c": 0.11188,
    "h": 231.7
  },
  "luminance": 0.43648
}

Semantic roles & 50–950 ramp

primary

#5BBBE9

secondary

#E9C7B7

accent

#4F0DD9

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #5BBBE9

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

Preview Lab → · Contrast checker → · Palette generator →