#51A8BE#51A8BE
#51A8BE is a light, moderate cyan. Relative luminance 0.335; OKLCH L 68.7% C 0.089 H 216.7°. Best body text is #000000 at 7.69:1 contrast (WCAG AA passes).
Color values
| HEX | #51A8BE |
|---|---|
| RGB | rgb(81, 168, 190) |
| HSL | hsl(192, 46%, 53%) |
| HSV | hsv(192, 57%, 75%) |
| CMYK | cmyk(57.4%, 11.6%, 0%, 25.5%) |
| CIE-LAB | lab(64.54, -19.75, -19.21) |
| CIE-LCH | lch(64.54, 27.55, 224.22°) |
| OKLab | oklab(68.65% -0.0715 -0.0533) |
| OKLCH | oklch(68.65% 0.089 216.7) |
| XYZ | xyz(26.6865, 33.4697, 53.7592) |
| Luminance | 0.3347 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Turquoise Blue
#06B1C4
ΔE00 5.33
Greyblue
#77A1B5
ΔE00 6.95
Cadetblue
#5F9EA0
ΔE00 7.92
Bluegrey
#85A3B2
ΔE00 9.38
Teal Blue
#01889F
ΔE00 11.42
Bluey Grey
#89A0B0
ΔE00 11.52
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#51A8BE #BE6751
analogous
#51BE9D #51A8BE #5171BE
triadic
#51A8BE #BE51A8 #A8BE51
tetradic
#51A8BE #9D51BE #BE6751 #71BE51
square
#51A8BE #9D51BE #BE6751 #71BE51
split-complementary
#51A8BE #BE5171 #BE9D51
monochromatic
#285F6C #398599 #51A8BE #7EBECF #AAD5DF
Accessibility & contrast
On white
2.73
#51A8BE on #FFFFFF
AA ✗AA large ✗AAA ✗
On black
7.69
#51A8BE on #000000
AA ✓AA large ✓AAA ✓
Best text color
#000000 on #51A8BE
7.69:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##51A8BE | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##51A8BE | 1.00 | 2.73 | 7.69 | 7.69 |
| #FFFFFF | 2.73 | 1.00 | 21.00 | 21.00 |
| #000000 | 7.69 | 21.00 | 1.00 | 1.00 |
| ##000000 | 7.69 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#99A3BF
Deuteranopia (green-blind)
#8997BE
Tritanopia (blue-blind)
#00B0AF
Achromatopsia (no color)
#9C9C9C
Design tokens & code
CSS
--color: #51a8be; /* rgb */ color: rgb(81, 168, 190); /* oklch */ color: oklch(68.7% 0.089 216.7);
Tailwind
colors: {
custom: {
50: '#8bc2d1',
500: '#51a8be',
950: '#000000',
},
}SCSS
$custom: #51a8be; $custom-light: #8bc2d1; $custom-dark: #000000;
JSON
{
"hex": "#51a8be",
"rgb": {
"r": 81,
"g": 168,
"b": 190
},
"hsl": {
"h": 192.11,
"s": 45.607,
"l": 53.137
},
"oklch": {
"l": 0.68651,
"c": 0.08918,
"h": 216.7
},
"luminance": 0.33472
}Semantic roles & 50–950 ramp
primary
#51A8BE
secondary
#CDA79E
accent
#6D53D5
background
#F9FBFC
surface
#F1F7F9
border
#CBD0D2
text
#0D1214
muted
#7E8182