#5BB5DD#5BB5DD

#5BB5DD is a light, moderate cyan. Relative luminance 0.405; OKLCH L 73.3% C 0.104 H 229.5°. Best body text is #000000 at 9.10:1 contrast (WCAG AA passes).

Color values

HEX	#5BB5DD
RGB	rgb(91, 181, 221)
HSL	hsl(198, 66%, 61%)
HSV	hsv(198, 59%, 87%)
CMYK	cmyk(58.8%, 18.1%, 0%, 13.3%)
CIE-LAB	lab(69.82, -15.37, -28.22)
CIE-LCH	lch(69.82, 32.13, 241.43°)
OKLab	oklab(73.34% -0.0673 -0.0787)
OKLCH	oklch(73.34% 0.104 229.5)
XYZ	xyz(33.8844, 40.4891, 74.4221)
Luminance	0.4049 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5BB5DD #DD835B

analogous

#5BDDC4 #5BB5DD #5B74DD

triadic

#5BB5DD #DD5BB5 #B5DD5B

tetradic

#5BB5DD #C45BDD #DD835B #74DD5B

square

#5BB5DD #C45BDD #DD835B #74DD5B

split-complementary

#5BB5DD #DD5B74 #DDC45B

monochromatic

#21779D #2B9DD0 #5BB5DD #8ECCE8 #C0E3F2

Accessibility & contrast

On white

2.31

#5BB5DD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.10

#5BB5DD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5BB5DD

9.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5BB5DD	#FFFFFF	#000000	##000000
##5BB5DD	1.00	2.31	9.10	9.10
#FFFFFF	2.31	1.00	21.00	21.00
#000000	9.10	21.00	1.00	1.00
##000000	9.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A1B2DF

Deuteranopia (green-blind)

#8EA5DC

Tritanopia (blue-blind)

#00C0C2

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #5bb5dd;
/* rgb */ color: rgb(91, 181, 221);
/* oklch */ color: oklch(73.3% 0.104 229.5);

Tailwind

colors: {
  custom: {
    50: '#94cbe7',
    500: '#5bb5dd',
    950: '#000000',
  },
}

SCSS

$custom: #5bb5dd;
$custom-light: #94cbe7;
$custom-dark: #000000;

JSON

{
  "hex": "#5bb5dd",
  "rgb": {
    "r": 91,
    "g": 181,
    "b": 221
  },
  "hsl": {
    "h": 198.462,
    "s": 65.657,
    "l": 61.176
  },
  "oklch": {
    "l": 0.73339,
    "c": 0.10353,
    "h": 229.5
  },
  "luminance": 0.40492
}

Semantic roles & 50–950 ramp

primary

#5BB5DD

secondary

#E2C1B1

accent

#5018CE

background

#F9FCFE

surface

#F2F8FC

border

#CCD1D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #5BB5DD

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

Preview Lab → · Contrast checker → · Palette generator →