#5BB3EB#5BB3EB

#5BB3EB is a light, moderate cyan. Relative luminance 0.405; OKLCH L 73.5% C 0.117 H 239.1°. Best body text is #000000 at 9.09:1 contrast (WCAG AA passes).

Color values

HEX	#5BB3EB
RGB	rgb(91, 179, 235)
HSL	hsl(203, 78%, 64%)
HSV	hsv(203, 61%, 92%)
CMYK	cmyk(61.3%, 23.8%, 0%, 7.8%)
CIE-LAB	lab(69.80, -9.98, -35.89)
CIE-LCH	lch(69.80, 37.25, 254.46°)
OKLab	oklab(73.5% -0.0604 -0.1007)
OKLCH	oklch(73.5% 0.117 239.1)
XYZ	xyz(35.4242, 40.4590, 84.5237)
Luminance	0.4046 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5BB3EB #EB935B

analogous

#5BEBDB #5BB3EB #5B6BEB

triadic

#5BB3EB #EB5BB3 #B3EB5B

tetradic

#5BB3EB #DB5BEB #EB935B #6BEB5B

square

#5BB3EB #DB5BEB #EB935B #6BEB5B

split-complementary

#5BB3EB #EB5B6B #EBDB5B

monochromatic

#1678B5 #249AE4 #5BB3EB #92CCF2 #C8E6F8

Accessibility & contrast

On white

2.31

#5BB3EB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.09

#5BB3EB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5BB3EB

9.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5BB3EB	#FFFFFF	#000000	##000000
##5BB3EB	1.00	2.31	9.09	9.09
#FFFFFF	2.31	1.00	21.00	21.00
#000000	9.09	21.00	1.00	1.00
##000000	9.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#99B3EE

Deuteranopia (green-blind)

#86A4EA

Tritanopia (blue-blind)

#00C1C6

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #5bb3eb;
/* rgb */ color: rgb(91, 179, 235);
/* oklch */ color: oklch(73.5% 0.117 239.1);

Tailwind

colors: {
  custom: {
    50: '#96c9f1',
    500: '#5bb3eb',
    950: '#000000',
  },
}

SCSS

$custom: #5bb3eb;
$custom-light: #96c9f1;
$custom-dark: #000000;

JSON

{
  "hex": "#5bb3eb",
  "rgb": {
    "r": 91,
    "g": 179,
    "b": 235
  },
  "hsl": {
    "h": 203.333,
    "s": 78.261,
    "l": 63.922
  },
  "oklch": {
    "l": 0.73504,
    "c": 0.1174,
    "h": 239.1
  },
  "luminance": 0.40463
}

Semantic roles & 50–950 ramp

primary

#5BB3EB

secondary

#EACBB8

accent

#5C0BDB

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #5BB3EB

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

Preview Lab → · Contrast checker → · Palette generator →