#51A3CA#51A3CA
#51A3CA is a light, moderate cyan. Relative luminance 0.322; OKLCH L 68.0% C 0.098 H 231.3°. Best body text is #000000 at 7.44:1 contrast (WCAG AA passes).
Color values
| HEX | #51A3CA |
|---|---|
| RGB | rgb(81, 163, 202) |
| HSL | hsl(199, 53%, 55%) |
| HSV | hsv(199, 60%, 79%) |
| CMYK | cmyk(59.9%, 19.3%, 0%, 20.8%) |
| CIE-LAB | lab(63.51, -13.45, -27.47) |
| CIE-LCH | lch(63.51, 30.58, 243.92°) |
| OKLab | oklab(67.98% -0.0615 -0.0767) |
| OKLCH | oklch(67.98% 0.098 231.3) |
| XYZ | xyz(27.1471, 32.2054, 60.6513) |
| Luminance | 0.3221 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Greyblue
#77A1B5
ΔE00 6.33
Azure (survey)
#069AF3
ΔE00 8.85
Deepskyblue
#00BFFF
ΔE00 9.02
Bluegrey
#85A3B2
ΔE00 9.03
Bluey Grey
#89A0B0
ΔE00 10.15
Turquoise Blue
#06B1C4
ΔE00 10.52
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#51A3CA #CA7851
analogous
#51CAB5 #51A3CA #5166CA
triadic
#51A3CA #CA51A3 #A3CA51
tetradic
#51A3CA #B551CA #CA7851 #66CA51
square
#51A3CA #B551CA #CA7851 #66CA51
split-complementary
#51A3CA #CA5166 #CAB551
monochromatic
#25607B #3484AA #51A3CA #80BCD8 #AFD5E7
Accessibility & contrast
On white
2.82
#51A3CA on #FFFFFF
AA ✗AA large ✗AAA ✗
On black
7.44
#51A3CA on #000000
AA ✓AA large ✓AAA ✓
Best text color
#000000 on #51A3CA
7.44:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##51A3CA | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##51A3CA | 1.00 | 2.82 | 7.44 | 7.44 |
| #FFFFFF | 2.82 | 1.00 | 21.00 | 21.00 |
| #000000 | 7.44 | 21.00 | 1.00 | 1.00 |
| ##000000 | 7.44 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#90A1CC
Deuteranopia (green-blind)
#7F94C9
Tritanopia (blue-blind)
#00AEB0
Achromatopsia (no color)
#9A9A9A
Design tokens & code
CSS
--color: #51a3ca; /* rgb */ color: rgb(81, 163, 202); /* oklch */ color: oklch(68.0% 0.098 231.3);
Tailwind
colors: {
custom: {
50: '#8cbeda',
500: '#51a3ca',
950: '#000000',
},
}SCSS
$custom: #51a3ca; $custom-light: #8cbeda; $custom-dark: #000000;
JSON
{
"hex": "#51a3ca",
"rgb": {
"r": 81,
"g": 163,
"b": 202
},
"hsl": {
"h": 199.339,
"s": 53.304,
"l": 55.49
},
"oklch": {
"l": 0.67978,
"c": 0.09831,
"h": 231.3
},
"luminance": 0.32208
}Semantic roles & 50–950 ramp
primary
#51A3CA
secondary
#D5B2A2
accent
#7A4BDD
background
#F9FBFD
surface
#F1F6FA
border
#CBD0D3
text
#0D1214
muted
#7E8183