#5BB1E5#5BB1E5

#5BB1E5 is a light, moderate cyan. Relative luminance 0.393; OKLCH L 72.8% C 0.112 H 237.6°. Best body text is #000000 at 8.87:1 contrast (WCAG AA passes).

Color values

HEX	#5BB1E5
RGB	rgb(91, 177, 229)
HSL	hsl(203, 73%, 63%)
HSV	hsv(203, 60%, 90%)
CMYK	cmyk(60.3%, 22.7%, 0%, 10.2%)
CIE-LAB	lab(68.98, -10.77, -33.87)
CIE-LCH	lch(68.98, 35.54, 252.36°)
OKLab	oklab(72.78% -0.0602 -0.0949)
OKLCH	oklch(72.78% 0.112 237.6)
XYZ	xyz(34.1740, 39.3223, 79.9025)
Luminance	0.3933 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5BB1E5 #E58F5B

analogous

#5BE5D4 #5BB1E5 #5B6CE5

triadic

#5BB1E5 #E55BB1 #B1E55B

tetradic

#5BB1E5 #D45BE5 #E58F5B #6CE55B

square

#5BB1E5 #D45BE5 #E58F5B #6CE55B

split-complementary

#5BB1E5 #E55B6C #E5D45B

monochromatic

#1B74AB #2698DD #5BB1E5 #90CAED #C5E3F6

Accessibility & contrast

On white

2.37

#5BB1E5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.87

#5BB1E5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5BB1E5

8.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5BB1E5	#FFFFFF	#000000	##000000
##5BB1E5	1.00	2.37	8.87	8.87
#FFFFFF	2.37	1.00	21.00	21.00
#000000	8.87	21.00	1.00	1.00
##000000	8.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#99B0E7

Deuteranopia (green-blind)

#86A2E4

Tritanopia (blue-blind)

#00BEC2

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #5bb1e5;
/* rgb */ color: rgb(91, 177, 229);
/* oklch */ color: oklch(72.8% 0.112 237.6);

Tailwind

colors: {
  custom: {
    50: '#95c8ed',
    500: '#5bb1e5',
    950: '#000000',
  },
}

SCSS

$custom: #5bb1e5;
$custom-light: #95c8ed;
$custom-dark: #000000;

JSON

{
  "hex": "#5bb1e5",
  "rgb": {
    "r": 91,
    "g": 177,
    "b": 229
  },
  "hsl": {
    "h": 202.609,
    "s": 72.632,
    "l": 62.745
  },
  "oklch": {
    "l": 0.7278,
    "c": 0.11241,
    "h": 237.6
  },
  "luminance": 0.39326
}

Semantic roles & 50–950 ramp

primary

#5BB1E5

secondary

#E7C8B5

accent

#5B11D5

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #5BB1E5

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

Preview Lab → · Contrast checker → · Palette generator →