#5BB3DD#5BB3DD

#5BB3DD is a light, moderate cyan. Relative luminance 0.397; OKLCH L 72.9% C 0.104 H 231.3°. Best body text is #000000 at 8.94:1 contrast (WCAG AA passes).

Color values

HEX	#5BB3DD
RGB	rgb(91, 179, 221)
HSL	hsl(199, 66%, 61%)
HSV	hsv(199, 59%, 87%)
CMYK	cmyk(58.8%, 19%, 0%, 13.3%)
CIE-LAB	lab(69.24, -14.30, -29.10)
CIE-LCH	lch(69.24, 32.42, 243.82°)
OKLab	oklab(72.88% -0.0651 -0.0812)
OKLCH	oklch(72.88% 0.104 231.3)
XYZ	xyz(33.4806, 39.6816, 74.2875)
Luminance	0.3968 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5BB3DD #DD855B

analogous

#5BDDC6 #5BB3DD #5B72DD

triadic

#5BB3DD #DD5BB3 #B3DD5B

tetradic

#5BB3DD #C65BDD #DD855B #72DD5B

square

#5BB3DD #C65BDD #DD855B #72DD5B

split-complementary

#5BB3DD #DD5B72 #DDC65B

monochromatic

#21759D #2B9BD0 #5BB3DD #8ECAE8 #C0E2F2

Accessibility & contrast

On white

2.35

#5BB3DD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.94

#5BB3DD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5BB3DD

8.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5BB3DD	#FFFFFF	#000000	##000000
##5BB3DD	1.00	2.35	8.94	8.94
#FFFFFF	2.35	1.00	21.00	21.00
#000000	8.94	21.00	1.00	1.00
##000000	8.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9EB1DF

Deuteranopia (green-blind)

#8CA3DC

Tritanopia (blue-blind)

#00BFC1

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #5bb3dd;
/* rgb */ color: rgb(91, 179, 221);
/* oklch */ color: oklch(72.9% 0.104 231.3);

Tailwind

colors: {
  custom: {
    50: '#94c9e7',
    500: '#5bb3dd',
    950: '#000000',
  },
}

SCSS

$custom: #5bb3dd;
$custom-light: #94c9e7;
$custom-dark: #000000;

JSON

{
  "hex": "#5bb3dd",
  "rgb": {
    "r": 91,
    "g": 179,
    "b": 221
  },
  "hsl": {
    "h": 199.385,
    "s": 65.657,
    "l": 61.176
  },
  "oklch": {
    "l": 0.72882,
    "c": 0.10411,
    "h": 231.3
  },
  "luminance": 0.39685
}

Semantic roles & 50–950 ramp

primary

#5BB3DD

secondary

#E2C1B1

accent

#5318CE

background

#F9FCFE

surface

#F2F8FC

border

#CCD1D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #5BB3DD

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

Preview Lab → · Contrast checker → · Palette generator →