#5BB1EF#5BB1EF

#5BB1EF is a light, vivid cyan. Relative luminance 0.399; OKLCH L 73.2% C 0.123 H 242.3°. Best body text is #000000 at 8.98:1 contrast (WCAG AA passes).

Color values

HEX	#5BB1EF
RGB	rgb(91, 177, 239)
HSL	hsl(205, 82%, 65%)
HSV	hsv(205, 62%, 94%)
CMYK	cmyk(61.9%, 25.9%, 0%, 6.3%)
CIE-LAB	lab(69.40, -7.63, -38.69)
CIE-LCH	lch(69.40, 39.43, 258.84°)
OKLab	oklab(73.24% -0.057 -0.1088)
OKLCH	oklch(73.24% 0.123 242.3)
XYZ	xyz(35.6107, 39.8969, 87.4688)
Luminance	0.3990 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5BB1EF #EF995B

analogous

#5BEFE3 #5BB1EF #5B67EF

triadic

#5BB1EF #EF5BB1 #B1EF5B

tetradic

#5BB1EF #E35BEF #EF995B #67EF5B

square

#5BB1EF #E35BEF #EF995B #67EF5B

split-complementary

#5BB1EF #EF5B67 #EFE35B

monochromatic

#1276BD #2396EA #5BB1EF #93CCF4 #CBE6FA

Accessibility & contrast

On white

2.34

#5BB1EF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.98

#5BB1EF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5BB1EF

8.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5BB1EF	#FFFFFF	#000000	##000000
##5BB1EF	1.00	2.34	8.98	8.98
#FFFFFF	2.34	1.00	21.00	21.00
#000000	8.98	21.00	1.00	1.00
##000000	8.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#95B2F2

Deuteranopia (green-blind)

#81A3EE

Tritanopia (blue-blind)

#00C0C6

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #5bb1ef;
/* rgb */ color: rgb(91, 177, 239);
/* oklch */ color: oklch(73.2% 0.123 242.3);

Tailwind

colors: {
  custom: {
    50: '#96c8f4',
    500: '#5bb1ef',
    950: '#000000',
  },
}

SCSS

$custom: #5bb1ef;
$custom-light: #96c8f4;
$custom-dark: #000000;

JSON

{
  "hex": "#5bb1ef",
  "rgb": {
    "r": 91,
    "g": 177,
    "b": 239
  },
  "hsl": {
    "h": 205.135,
    "s": 82.222,
    "l": 64.706
  },
  "oklch": {
    "l": 0.73243,
    "c": 0.12281,
    "h": 242.3
  },
  "luminance": 0.399
}

Semantic roles & 50–950 ramp

primary

#5BB1EF

secondary

#ECCFBA

accent

#6107DF

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0F1317

muted

#7E8285

Preview Lab

Preview with #5BB1EF

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

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