#5BB3EC#5BB3EC
#5BB3EC is a light, moderate cyan. Relative luminance 0.405; OKLCH L 73.6% C 0.118 H 239.5°. Best body text is #000000 at 9.10:1 contrast (WCAG AA passes).
Color values
| HEX | #5BB3EC |
|---|---|
| RGB | rgb(91, 179, 236) |
| HSL | hsl(204, 79%, 64%) |
| HSV | hsv(204, 61%, 93%) |
| CMYK | cmyk(61.4%, 24.2%, 0%, 7.5%) |
| CIE-LAB | lab(69.84, -9.67, -36.37) |
| CIE-LCH | lch(69.84, 37.63, 255.11°) |
| OKLab | oklab(73.55% -0.06 -0.1021) |
| OKLCH | oklch(73.55% 0.118 239.5) |
| XYZ | xyz(35.5691, 40.5170, 85.2867) |
| Luminance | 0.4052 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Sky Blue (survey)
#75BBFD
ΔE00 4.65
Deepskyblue
#00BFFF
ΔE00 5.42
Lightblue (survey)
#7BC8F6
ΔE00 6.08
Sky
#82CAFC
ΔE00 6.57
Lightskyblue
#87CEFA
ΔE00 7.74
Azure (survey)
#069AF3
ΔE00 8.29
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#5BB3EC #EC945B
analogous
#5BECDC #5BB3EC #5B6BEC
triadic
#5BB3EC #EC5BB3 #B3EC5B
tetradic
#5BB3EC #DC5BEC #EC945B #6BEC5B
square
#5BB3EC #DC5BEC #EC945B #6BEC5B
split-complementary
#5BB3EC #EC5B6B #ECDC5B
monochromatic
#1578B7 #249AE6 #5BB3EC #92CCF2 #C9E6F9
Accessibility & contrast
On white
2.31
#5BB3EC on #FFFFFF
AA ✗AA large ✗AAA ✗
On black
9.10
#5BB3EC on #000000
AA ✓AA large ✓AAA ✓
Best text color
#000000 on #5BB3EC
9.10:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##5BB3EC | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##5BB3EC | 1.00 | 2.31 | 9.10 | 9.10 |
| #FFFFFF | 2.31 | 1.00 | 21.00 | 21.00 |
| #000000 | 9.10 | 21.00 | 1.00 | 1.00 |
| ##000000 | 9.10 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#99B3EF
Deuteranopia (green-blind)
#85A4EB
Tritanopia (blue-blind)
#00C1C6
Achromatopsia (no color)
#ABABAB
Design tokens & code
CSS
--color: #5bb3ec; /* rgb */ color: rgb(91, 179, 236); /* oklch */ color: oklch(73.6% 0.118 239.5);
Tailwind
colors: {
custom: {
50: '#96c9f2',
500: '#5bb3ec',
950: '#000000',
},
}SCSS
$custom: #5bb3ec; $custom-light: #96c9f2; $custom-dark: #000000;
JSON
{
"hex": "#5bb3ec",
"rgb": {
"r": 91,
"g": 179,
"b": 236
},
"hsl": {
"h": 203.586,
"s": 79.235,
"l": 64.118
},
"oklch": {
"l": 0.7355,
"c": 0.11842,
"h": 239.5
},
"luminance": 0.4052
}Semantic roles & 50–950 ramp
primary
#5BB3EC
secondary
#EBCCB8
accent
#5C0ADC
background
#F9FCFE
surface
#F2F8FD
border
#CCD1D5
text
#0E1317
muted
#7E8285