#5BB1E9#5BB1E9

#5BB1E9 is a light, moderate cyan. Relative luminance 0.396; OKLCH L 73.0% C 0.116 H 239.6°. Best body text is #000000 at 8.91:1 contrast (WCAG AA passes).

Color values

HEX	#5BB1E9
RGB	rgb(91, 177, 233)
HSL	hsl(204, 76%, 64%)
HSV	hsv(204, 61%, 91%)
CMYK	cmyk(60.9%, 24%, 0%, 8.6%)
CIE-LAB	lab(69.15, -9.52, -35.80)
CIE-LCH	lch(69.15, 37.05, 255.11°)
OKLab	oklab(72.96% -0.0589 -0.1005)
OKLCH	oklch(72.96% 0.116 239.6)
XYZ	xyz(34.7390, 39.5482, 82.8778)
Luminance	0.3955 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5BB1E9 #E9935B

analogous

#5BE9DA #5BB1E9 #5B6AE9

triadic

#5BB1E9 #E95BB1 #B1E95B

tetradic

#5BB1E9 #DA5BE9 #E9935B #6AE95B

square

#5BB1E9 #DA5BE9 #E9935B #6AE95B

split-complementary

#5BB1E9 #E95B6A #E9DA5B

monochromatic

#1875B2 #2597E2 #5BB1E9 #91CBF0 #C7E4F7

Accessibility & contrast

On white

2.36

#5BB1E9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.91

#5BB1E9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5BB1E9

8.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5BB1E9	#FFFFFF	#000000	##000000
##5BB1E9	1.00	2.36	8.91	8.91
#FFFFFF	2.36	1.00	21.00	21.00
#000000	8.91	21.00	1.00	1.00
##000000	8.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#98B1EC

Deuteranopia (green-blind)

#84A2E8

Tritanopia (blue-blind)

#00BFC4

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #5bb1e9;
/* rgb */ color: rgb(91, 177, 233);
/* oklch */ color: oklch(73.0% 0.116 239.6);

Tailwind

colors: {
  custom: {
    50: '#95c8f0',
    500: '#5bb1e9',
    950: '#000000',
  },
}

SCSS

$custom: #5bb1e9;
$custom-light: #95c8f0;
$custom-dark: #000000;

JSON

{
  "hex": "#5bb1e9",
  "rgb": {
    "r": 91,
    "g": 177,
    "b": 233
  },
  "hsl": {
    "h": 203.662,
    "s": 76.344,
    "l": 63.529
  },
  "oklch": {
    "l": 0.72963,
    "c": 0.11647,
    "h": 239.6
  },
  "luminance": 0.39552
}

Semantic roles & 50–950 ramp

primary

#5BB1E9

secondary

#E9CBB7

accent

#5D0DD9

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #5BB1E9

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

Preview Lab → · Contrast checker → · Palette generator →