#5BB3E9#5BB3E9

#5BB3E9 is a light, moderate cyan. Relative luminance 0.403; OKLCH L 73.4% C 0.115 H 238.1°. Best body text is #000000 at 9.07:1 contrast (WCAG AA passes).

Color values

HEX	#5BB3E9
RGB	rgb(91, 179, 233)
HSL	hsl(203, 76%, 64%)
HSV	hsv(203, 61%, 91%)
CMYK	cmyk(60.9%, 23.2%, 0%, 8.6%)
CIE-LAB	lab(69.71, -10.61, -34.92)
CIE-LCH	lch(69.71, 36.50, 253.10°)
OKLab	oklab(73.41% -0.061 -0.0979)
OKLCH	oklch(73.41% 0.115 238.1)
XYZ	xyz(35.1369, 40.3441, 83.0105)
Luminance	0.4035 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5BB3E9 #E9915B

analogous

#5BE9D8 #5BB3E9 #5B6CE9

triadic

#5BB3E9 #E95BB3 #B3E95B

tetradic

#5BB3E9 #D85BE9 #E9915B #6CE95B

square

#5BB3E9 #D85BE9 #E9915B #6CE95B

split-complementary

#5BB3E9 #E95B6C #E9D85B

monochromatic

#1877B2 #259AE2 #5BB3E9 #91CCF0 #C7E5F7

Accessibility & contrast

On white

2.32

#5BB3E9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.07

#5BB3E9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5BB3E9

9.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5BB3E9	#FFFFFF	#000000	##000000
##5BB3E9	1.00	2.32	9.07	9.07
#FFFFFF	2.32	1.00	21.00	21.00
#000000	9.07	21.00	1.00	1.00
##000000	9.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9AB2EC

Deuteranopia (green-blind)

#87A4E8

Tritanopia (blue-blind)

#00C1C5

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #5bb3e9;
/* rgb */ color: rgb(91, 179, 233);
/* oklch */ color: oklch(73.4% 0.115 238.1);

Tailwind

colors: {
  custom: {
    50: '#95c9f0',
    500: '#5bb3e9',
    950: '#000000',
  },
}

SCSS

$custom: #5bb3e9;
$custom-light: #95c9f0;
$custom-dark: #000000;

JSON

{
  "hex": "#5bb3e9",
  "rgb": {
    "r": 91,
    "g": 179,
    "b": 233
  },
  "hsl": {
    "h": 202.817,
    "s": 76.344,
    "l": 63.529
  },
  "oklch": {
    "l": 0.73413,
    "c": 0.11537,
    "h": 238.1
  },
  "luminance": 0.40348
}

Semantic roles & 50–950 ramp

primary

#5BB3E9

secondary

#E9CAB7

accent

#5A0DD9

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #5BB3E9

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

Preview Lab → · Contrast checker → · Palette generator →