#5BB1E8#5BB1E8

#5BB1E8 is a light, moderate cyan. Relative luminance 0.395; OKLCH L 72.9% C 0.115 H 239.1°. Best body text is #000000 at 8.90:1 contrast (WCAG AA passes).

Color values

HEX	#5BB1E8
RGB	rgb(91, 177, 232)
HSL	hsl(203, 75%, 63%)
HSV	hsv(203, 61%, 91%)
CMYK	cmyk(60.8%, 23.7%, 0%, 9%)
CIE-LAB	lab(69.11, -9.84, -35.32)
CIE-LCH	lch(69.11, 36.67, 254.44°)
OKLab	oklab(72.92% -0.0592 -0.0991)
OKLCH	oklch(72.92% 0.115 239.1)
XYZ	xyz(34.5965, 39.4913, 82.1276)
Luminance	0.3950 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5BB1E8 #E8925B

analogous

#5BE8D8 #5BB1E8 #5B6AE8

triadic

#5BB1E8 #E85BB1 #B1E85B

tetradic

#5BB1E8 #D85BE8 #E8925B #6AE85B

square

#5BB1E8 #D85BE8 #E8925B #6AE85B

split-complementary

#5BB1E8 #E85B6A #E8D85B

monochromatic

#1975B0 #2597E0 #5BB1E8 #91CBF0 #C6E4F7

Accessibility & contrast

On white

2.36

#5BB1E8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.90

#5BB1E8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5BB1E8

8.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5BB1E8	#FFFFFF	#000000	##000000
##5BB1E8	1.00	2.36	8.90	8.90
#FFFFFF	2.36	1.00	21.00	21.00
#000000	8.90	21.00	1.00	1.00
##000000	8.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#98B1EB

Deuteranopia (green-blind)

#85A2E7

Tritanopia (blue-blind)

#00BFC4

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #5bb1e8;
/* rgb */ color: rgb(91, 177, 232);
/* oklch */ color: oklch(72.9% 0.115 239.1);

Tailwind

colors: {
  custom: {
    50: '#95c8ef',
    500: '#5bb1e8',
    950: '#000000',
  },
}

SCSS

$custom: #5bb1e8;
$custom-light: #95c8ef;
$custom-dark: #000000;

JSON

{
  "hex": "#5bb1e8",
  "rgb": {
    "r": 91,
    "g": 177,
    "b": 232
  },
  "hsl": {
    "h": 203.404,
    "s": 75.401,
    "l": 63.333
  },
  "oklch": {
    "l": 0.72917,
    "c": 0.11544,
    "h": 239.1
  },
  "luminance": 0.39495
}

Semantic roles & 50–950 ramp

primary

#5BB1E8

secondary

#E9CAB6

accent

#5D0ED8

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #5BB1E8

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

Preview Lab → · Contrast checker → · Palette generator →