#5BB9E5#5BB9E5

#5BB9E5 is a light, moderate cyan. Relative luminance 0.426; OKLCH L 74.6% C 0.109 H 231.0°. Best body text is #000000 at 9.52:1 contrast (WCAG AA passes).

Color values

HEX	#5BB9E5
RGB	rgb(91, 185, 229)
HSL	hsl(199, 73%, 63%)
HSV	hsv(199, 60%, 90%)
CMYK	cmyk(60.3%, 19.2%, 0%, 10.2%)
CIE-LAB	lab(71.27, -15.05, -30.35)
CIE-LCH	lch(71.27, 33.87, 243.62°)
OKLab	oklab(74.59% -0.0687 -0.0848)
OKLCH	oklch(74.59% 0.109 231)
XYZ	xyz(35.8007, 42.5757, 80.4448)
Luminance	0.4258 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5BB9E5 #E5875B

analogous

#5BE5CC #5BB9E5 #5B74E5

triadic

#5BB9E5 #E55BB9 #B9E55B

tetradic

#5BB9E5 #CC5BE5 #E5875B #74E55B

square

#5BB9E5 #CC5BE5 #E5875B #74E55B

split-complementary

#5BB9E5 #E55B74 #E5CC5B

monochromatic

#1B7DAB #26A2DD #5BB9E5 #90D0ED #C5E6F6

Accessibility & contrast

On white

2.21

#5BB9E5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.52

#5BB9E5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5BB9E5

9.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5BB9E5	#FFFFFF	#000000	##000000
##5BB9E5	1.00	2.21	9.52	9.52
#FFFFFF	2.21	1.00	21.00	21.00
#000000	9.52	21.00	1.00	1.00
##000000	9.52	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A3B7E7

Deuteranopia (green-blind)

#90A8E4

Tritanopia (blue-blind)

#00C5C7

Achromatopsia (no color)

#AEAEAE

Design tokens & code

CSS

--color: #5bb9e5;
/* rgb */ color: rgb(91, 185, 229);
/* oklch */ color: oklch(74.6% 0.109 231.0);

Tailwind

colors: {
  custom: {
    50: '#95ceed',
    500: '#5bb9e5',
    950: '#000000',
  },
}

SCSS

$custom: #5bb9e5;
$custom-light: #95ceed;
$custom-dark: #000000;

JSON

{
  "hex": "#5bb9e5",
  "rgb": {
    "r": 91,
    "g": 185,
    "b": 229
  },
  "hsl": {
    "h": 199.13,
    "s": 72.632,
    "l": 62.745
  },
  "oklch": {
    "l": 0.74594,
    "c": 0.10909,
    "h": 231
  },
  "luminance": 0.42579
}

Semantic roles & 50–950 ramp

primary

#5BB9E5

secondary

#E7C5B5

accent

#4F11D5

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #5BB9E5

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

Preview Lab → · Contrast checker → · Palette generator →