#5BB9E9#5BB9E9

#5BB9E9 is a light, moderate cyan. Relative luminance 0.428; OKLCH L 74.8% C 0.113 H 233.3°. Best body text is #000000 at 9.56:1 contrast (WCAG AA passes).

Color values

HEX	#5BB9E9
RGB	rgb(91, 185, 233)
HSL	hsl(200, 76%, 64%)
HSV	hsv(200, 61%, 91%)
CMYK	cmyk(60.9%, 20.6%, 0%, 8.6%)
CIE-LAB	lab(71.42, -13.83, -32.28)
CIE-LCH	lch(71.42, 35.12, 246.81°)
OKLab	oklab(74.77% -0.0673 -0.0903)
OKLCH	oklch(74.77% 0.113 233.3)
XYZ	xyz(36.3657, 42.8017, 83.4201)
Luminance	0.4280 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5BB9E9 #E98B5B

analogous

#5BE9D2 #5BB9E9 #5B72E9

triadic

#5BB9E9 #E95BB9 #B9E95B

tetradic

#5BB9E9 #D25BE9 #E98B5B #72E95B

square

#5BB9E9 #D25BE9 #E98B5B #72E95B

split-complementary

#5BB9E9 #E95B72 #E9D25B

monochromatic

#187EB2 #25A2E2 #5BB9E9 #91D0F0 #C7E7F7

Accessibility & contrast

On white

2.20

#5BB9E9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.56

#5BB9E9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5BB9E9

9.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5BB9E9	#FFFFFF	#000000	##000000
##5BB9E9	1.00	2.20	9.56	9.56
#FFFFFF	2.20	1.00	21.00	21.00
#000000	9.56	21.00	1.00	1.00
##000000	9.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A2B7EB

Deuteranopia (green-blind)

#8EA9E8

Tritanopia (blue-blind)

#00C6C9

Achromatopsia (no color)

#AFAFAF

Design tokens & code

CSS

--color: #5bb9e9;
/* rgb */ color: rgb(91, 185, 233);
/* oklch */ color: oklch(74.8% 0.113 233.3);

Tailwind

colors: {
  custom: {
    50: '#96cef0',
    500: '#5bb9e9',
    950: '#000000',
  },
}

SCSS

$custom: #5bb9e9;
$custom-light: #96cef0;
$custom-dark: #000000;

JSON

{
  "hex": "#5bb9e9",
  "rgb": {
    "r": 91,
    "g": 185,
    "b": 233
  },
  "hsl": {
    "h": 200.282,
    "s": 76.344,
    "l": 63.529
  },
  "oklch": {
    "l": 0.74768,
    "c": 0.11261,
    "h": 233.3
  },
  "luminance": 0.42805
}

Semantic roles & 50–950 ramp

primary

#5BB9E9

secondary

#E9C8B7

accent

#520DD9

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #5BB9E9

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

Preview Lab → · Contrast checker → · Palette generator →