#5BB3EF#5BB3EF

#5BB3EF is a light, vivid cyan. Relative luminance 0.407; OKLCH L 73.7% C 0.122 H 240.9°. Best body text is #000000 at 9.14:1 contrast (WCAG AA passes).

Color values

HEX	#5BB3EF
RGB	rgb(91, 179, 239)
HSL	hsl(204, 82%, 65%)
HSV	hsv(204, 62%, 94%)
CMYK	cmyk(61.9%, 25.1%, 0%, 6.3%)
CIE-LAB	lab(69.96, -8.73, -37.81)
CIE-LCH	lch(69.96, 38.80, 257.00°)
OKLab	oklab(73.69% -0.0591 -0.1062)
OKLCH	oklch(73.69% 0.122 240.9)
XYZ	xyz(36.0086, 40.6928, 87.6015)
Luminance	0.4070 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5BB3EF #EF975B

analogous

#5BEFE1 #5BB3EF #5B69EF

triadic

#5BB3EF #EF5BB3 #B3EF5B

tetradic

#5BB3EF #E15BEF #EF975B #69EF5B

square

#5BB3EF #E15BEF #EF975B #69EF5B

split-complementary

#5BB3EF #EF5B69 #EFE15B

monochromatic

#1278BD #2399EA #5BB3EF #93CDF4 #CBE7FA

Accessibility & contrast

On white

2.30

#5BB3EF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.14

#5BB3EF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5BB3EF

9.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5BB3EF	#FFFFFF	#000000	##000000
##5BB3EF	1.00	2.30	9.14	9.14
#FFFFFF	2.30	1.00	21.00	21.00
#000000	9.14	21.00	1.00	1.00
##000000	9.14	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#98B3F2

Deuteranopia (green-blind)

#84A4EE

Tritanopia (blue-blind)

#00C2C8

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #5bb3ef;
/* rgb */ color: rgb(91, 179, 239);
/* oklch */ color: oklch(73.7% 0.122 240.9);

Tailwind

colors: {
  custom: {
    50: '#96c9f4',
    500: '#5bb3ef',
    950: '#000000',
  },
}

SCSS

$custom: #5bb3ef;
$custom-light: #96c9f4;
$custom-dark: #000000;

JSON

{
  "hex": "#5bb3ef",
  "rgb": {
    "r": 91,
    "g": 179,
    "b": 239
  },
  "hsl": {
    "h": 204.324,
    "s": 82.222,
    "l": 64.706
  },
  "oklch": {
    "l": 0.73689,
    "c": 0.12155,
    "h": 240.9
  },
  "luminance": 0.40696
}

Semantic roles & 50–950 ramp

primary

#5BB3EF

secondary

#ECCEBA

accent

#5E07DF

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0F1317

muted

#7E8285

Preview Lab

Preview with #5BB3EF

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

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