#5BB3F4#5BB3F4

#5BB3F4 is a light, vivid cyan. Relative luminance 0.410; OKLCH L 73.9% C 0.127 H 243.1°. Best body text is #000000 at 9.20:1 contrast (WCAG AA passes).

Color values

HEX	#5BB3F4
RGB	rgb(91, 179, 244)
HSL	hsl(205, 87%, 66%)
HSV	hsv(205, 63%, 96%)
CMYK	cmyk(62.7%, 26.6%, 0%, 4.3%)
CIE-LAB	lab(70.17, -7.14, -40.20)
CIE-LCH	lch(70.17, 40.83, 259.93°)
OKLab	oklab(73.93% -0.0575 -0.1131)
OKLCH	oklch(73.93% 0.127 243.1)
XYZ	xyz(36.7575, 40.9923, 91.5456)
Luminance	0.4100 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5BB3F4 #F49C5B

analogous

#5BF4E8 #5BB3F4 #5B66F4

triadic

#5BB3F4 #F45BB3 #B3F45B

tetradic

#5BB3F4 #E85BF4 #F49C5B #66F45B

square

#5BB3F4 #E85BF4 #F49C5B #66F45B

split-complementary

#5BB3F4 #F45B66 #F4E85B

monochromatic

#0D78C7 #2298F0 #5BB3F4 #94CEF8 #CEE8FC

Accessibility & contrast

On white

2.28

#5BB3F4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.20

#5BB3F4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5BB3F4

9.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5BB3F4	#FFFFFF	#000000	##000000
##5BB3F4	1.00	2.28	9.20	9.20
#FFFFFF	2.28	1.00	21.00	21.00
#000000	9.20	21.00	1.00	1.00
##000000	9.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#96B4F7

Deuteranopia (green-blind)

#81A5F3

Tritanopia (blue-blind)

#00C3C9

Achromatopsia (no color)

#ACACAC

Design tokens & code

CSS

--color: #5bb3f4;
/* rgb */ color: rgb(91, 179, 244);
/* oklch */ color: oklch(73.9% 0.127 243.1);

Tailwind

colors: {
  custom: {
    50: '#97c9f8',
    500: '#5bb3f4',
    950: '#000000',
  },
}

SCSS

$custom: #5bb3f4;
$custom-light: #97c9f8;
$custom-dark: #000000;

JSON

{
  "hex": "#5bb3f4",
  "rgb": {
    "r": 91,
    "g": 179,
    "b": 244
  },
  "hsl": {
    "h": 205.49,
    "s": 87.429,
    "l": 65.686
  },
  "oklch": {
    "l": 0.73925,
    "c": 0.1269,
    "h": 243.1
  },
  "luminance": 0.40996
}

Semantic roles & 50–950 ramp

primary

#5BB3F4

secondary

#EFD2BC

accent

#6202E4

background

#F9FCFF

surface

#F2F8FF

border

#CCD1D7

text

#0F1317

muted

#7E8285

Preview Lab

Preview with #5BB3F4

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

Preview Lab → · Contrast checker → · Palette generator →