#5BB9DD#5BB9DD

#5BB9DD is a light, moderate cyan. Relative luminance 0.421; OKLCH L 74.3% C 0.103 H 225.8°. Best body text is #000000 at 9.43:1 contrast (WCAG AA passes).

Color values

HEX	#5BB9DD
RGB	rgb(91, 185, 221)
HSL	hsl(197, 66%, 61%)
HSV	hsv(197, 59%, 87%)
CMYK	cmyk(58.8%, 16.3%, 0%, 13.3%)
CIE-LAB	lab(70.97, -17.47, -26.45)
CIE-LCH	lch(70.97, 31.70, 236.56°)
OKLab	oklab(74.26% -0.0715 -0.0737)
OKLCH	oklch(74.26% 0.103 225.8)
XYZ	xyz(34.7094, 42.1392, 74.6971)
Luminance	0.4214 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5BB9DD #DD7F5B

analogous

#5BDDC0 #5BB9DD #5B78DD

triadic

#5BB9DD #DD5BB9 #B9DD5B

tetradic

#5BB9DD #C05BDD #DD7F5B #78DD5B

square

#5BB9DD #C05BDD #DD7F5B #78DD5B

split-complementary

#5BB9DD #DD5B78 #DDC05B

monochromatic

#217B9D #2BA2D0 #5BB9DD #8ECFE8 #C0E4F2

Accessibility & contrast

On white

2.23

#5BB9DD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.43

#5BB9DD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5BB9DD

9.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5BB9DD	#FFFFFF	#000000	##000000
##5BB9DD	1.00	2.23	9.43	9.43
#FFFFFF	2.23	1.00	21.00	21.00
#000000	9.43	21.00	1.00	1.00
##000000	9.43	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A5B6DF

Deuteranopia (green-blind)

#93A8DD

Tritanopia (blue-blind)

#00C4C5

Achromatopsia (no color)

#AEAEAE

Design tokens & code

CSS

--color: #5bb9dd;
/* rgb */ color: rgb(91, 185, 221);
/* oklch */ color: oklch(74.3% 0.103 225.8);

Tailwind

colors: {
  custom: {
    50: '#94cee7',
    500: '#5bb9dd',
    950: '#000000',
  },
}

SCSS

$custom: #5bb9dd;
$custom-light: #94cee7;
$custom-dark: #000000;

JSON

{
  "hex": "#5bb9dd",
  "rgb": {
    "r": 91,
    "g": 185,
    "b": 221
  },
  "hsl": {
    "h": 196.615,
    "s": 65.657,
    "l": 61.176
  },
  "oklch": {
    "l": 0.74257,
    "c": 0.10269,
    "h": 225.8
  },
  "luminance": 0.42143
}

Semantic roles & 50–950 ramp

primary

#5BB9DD

secondary

#E2BFB1

accent

#4A18CE

background

#F9FCFE

surface

#F2F9FC

border

#CCD2D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #5BB9DD

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

Preview Lab → · Contrast checker → · Palette generator →