#5BB9E4#5BB9E4

#5BB9E4 is a light, moderate cyan. Relative luminance 0.425; OKLCH L 74.6% C 0.108 H 230.4°. Best body text is #000000 at 9.50:1 contrast (WCAG AA passes).

Color values

HEX	#5BB9E4
RGB	rgb(91, 185, 228)
HSL	hsl(199, 72%, 63%)
HSV	hsv(199, 60%, 89%)
CMYK	cmyk(60.1%, 18.9%, 0%, 10.6%)
CIE-LAB	lab(71.23, -15.36, -29.86)
CIE-LCH	lch(71.23, 33.58, 242.78°)
OKLab	oklab(74.55% -0.069 -0.0834)
OKLCH	oklch(74.55% 0.108 230.4)
XYZ	xyz(35.6615, 42.5200, 79.7116)
Luminance	0.4252 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5BB9E4 #E4865B

analogous

#5BE4CA #5BB9E4 #5B75E4

triadic

#5BB9E4 #E45BB9 #B9E45B

tetradic

#5BB9E4 #CA5BE4 #E4865B #75E45B

square

#5BB9E4 #CA5BE4 #E4865B #75E45B

split-complementary

#5BB9E4 #E45B75 #E4CA5B

monochromatic

#1C7DA9 #26A3DB #5BB9E4 #90CFED #C4E6F5

Accessibility & contrast

On white

2.21

#5BB9E4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.50

#5BB9E4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5BB9E4

9.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5BB9E4	#FFFFFF	#000000	##000000
##5BB9E4	1.00	2.21	9.50	9.50
#FFFFFF	2.21	1.00	21.00	21.00
#000000	9.50	21.00	1.00	1.00
##000000	9.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A3B6E6

Deuteranopia (green-blind)

#90A8E3

Tritanopia (blue-blind)

#00C5C7

Achromatopsia (no color)

#AEAEAE

Design tokens & code

CSS

--color: #5bb9e4;
/* rgb */ color: rgb(91, 185, 228);
/* oklch */ color: oklch(74.6% 0.108 230.4);

Tailwind

colors: {
  custom: {
    50: '#95ceec',
    500: '#5bb9e4',
    950: '#000000',
  },
}

SCSS

$custom: #5bb9e4;
$custom-light: #95ceec;
$custom-dark: #000000;

JSON

{
  "hex": "#5bb9e4",
  "rgb": {
    "r": 91,
    "g": 185,
    "b": 228
  },
  "hsl": {
    "h": 198.832,
    "s": 71.728,
    "l": 62.549
  },
  "oklch": {
    "l": 0.74551,
    "c": 0.10824,
    "h": 230.4
  },
  "luminance": 0.42524
}

Semantic roles & 50–950 ramp

primary

#5BB9E4

secondary

#E6C4B4

accent

#4F12D4

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #5BB9E4

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

Preview Lab → · Contrast checker → · Palette generator →