#5BB3E8#5BB3E8

#5BB3E8 is a light, moderate cyan. Relative luminance 0.403; OKLCH L 73.4% C 0.114 H 237.6°. Best body text is #000000 at 9.06:1 contrast (WCAG AA passes).

Color values

HEX	#5BB3E8
RGB	rgb(91, 179, 232)
HSL	hsl(203, 75%, 63%)
HSV	hsv(203, 61%, 91%)
CMYK	cmyk(60.8%, 22.8%, 0%, 9%)
CIE-LAB	lab(69.67, -10.92, -34.44)
CIE-LCH	lch(69.67, 36.13, 252.41°)
OKLab	oklab(73.37% -0.0613 -0.0965)
OKLCH	oklch(73.37% 0.114 237.6)
XYZ	xyz(34.9944, 40.2871, 82.2603)
Luminance	0.4029 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5BB3E8 #E8905B

analogous

#5BE8D6 #5BB3E8 #5B6CE8

triadic

#5BB3E8 #E85BB3 #B3E85B

tetradic

#5BB3E8 #D65BE8 #E8905B #6CE85B

square

#5BB3E8 #D65BE8 #E8905B #6CE85B

split-complementary

#5BB3E8 #E85B6C #E8D65B

monochromatic

#1977B0 #259AE0 #5BB3E8 #91CCF0 #C6E5F7

Accessibility & contrast

On white

2.32

#5BB3E8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.06

#5BB3E8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5BB3E8

9.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5BB3E8	#FFFFFF	#000000	##000000
##5BB3E8	1.00	2.32	9.06	9.06
#FFFFFF	2.32	1.00	21.00	21.00
#000000	9.06	21.00	1.00	1.00
##000000	9.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9AB2EB

Deuteranopia (green-blind)

#87A4E7

Tritanopia (blue-blind)

#00C1C5

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #5bb3e8;
/* rgb */ color: rgb(91, 179, 232);
/* oklch */ color: oklch(73.4% 0.114 237.6);

Tailwind

colors: {
  custom: {
    50: '#95c9ef',
    500: '#5bb3e8',
    950: '#000000',
  },
}

SCSS

$custom: #5bb3e8;
$custom-light: #95c9ef;
$custom-dark: #000000;

JSON

{
  "hex": "#5bb3e8",
  "rgb": {
    "r": 91,
    "g": 179,
    "b": 232
  },
  "hsl": {
    "h": 202.553,
    "s": 75.401,
    "l": 63.333
  },
  "oklch": {
    "l": 0.73367,
    "c": 0.11437,
    "h": 237.6
  },
  "luminance": 0.40291
}

Semantic roles & 50–950 ramp

primary

#5BB3E8

secondary

#E9C9B6

accent

#5A0ED8

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #5BB3E8

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

Preview Lab → · Contrast checker → · Palette generator →