#31A0B8#31A0B8
#31A0B8 is a light, moderate cyan. Relative luminance 0.293; OKLCH L 65.5% C 0.102 H 215.6°. Best body text is #000000 at 6.85:1 contrast (WCAG AA passes).
Color values
| HEX | #31A0B8 |
|---|---|
| RGB | rgb(49, 160, 184) |
| HSL | hsl(191, 58%, 46%) |
| HSV | hsv(191, 73%, 72%) |
| CMYK | cmyk(73.4%, 13%, 0%, 27.8%) |
| CIE-LAB | lab(61.00, -22.68, -21.33) |
| CIE-LCH | lch(61.00, 31.13, 223.25°) |
| OKLab | oklab(65.48% -0.0832 -0.0595) |
| OKLCH | oklch(65.48% 0.102 215.6) |
| XYZ | xyz(22.4855, 29.2526, 49.7994) |
| Luminance | 0.2925 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Turquoise Blue
#06B1C4
ΔE00 5.84
Cadetblue
#5F9EA0
ΔE00 8.12
Teal Blue
#01889F
ΔE00 8.37
Greyblue
#77A1B5
ΔE00 8.70
Dirty Blue
#3F829D
ΔE00 10.70
Bluegrey
#85A3B2
ΔE00 11.36
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#31A0B8 #B84931
analogous
#31B88C #31A0B8 #315CB8
triadic
#31A0B8 #B831A0 #A0B831
tetradic
#31A0B8 #8C31B8 #B84931 #5CB831
square
#31A0B8 #8C31B8 #B84931 #5CB831
split-complementary
#31A0B8 #B8315C #B88C31
monochromatic
#174C57 #247688 #31A0B8 #55BBD2 #85CFDE
Accessibility & contrast
On white
3.07
#31A0B8 on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
6.85
#31A0B8 on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #31A0B8
6.85:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##31A0B8 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##31A0B8 | 1.00 | 3.07 | 6.85 | 6.85 |
| #FFFFFF | 3.07 | 1.00 | 21.00 | 21.00 |
| #000000 | 6.85 | 21.00 | 1.00 | 1.00 |
| ##000000 | 6.85 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#8F9BB9
Deuteranopia (green-blind)
#7D8DB8
Tritanopia (blue-blind)
#00A9A7
Achromatopsia (no color)
#939393
Design tokens & code
CSS
--color: #31a0b8; /* rgb */ color: rgb(49, 160, 184); /* oklch */ color: oklch(65.5% 0.102 215.6);
Tailwind
colors: {
custom: {
50: '#7dbccd',
500: '#31a0b8',
950: '#000000',
},
}SCSS
$custom: #31a0b8; $custom-light: #7dbccd; $custom-dark: #000000;
JSON
{
"hex": "#31a0b8",
"rgb": {
"r": 49,
"g": 160,
"b": 184
},
"hsl": {
"h": 190.667,
"s": 57.94,
"l": 45.686
},
"oklch": {
"l": 0.65482,
"c": 0.1023,
"h": 215.6
},
"luminance": 0.29255
}Semantic roles & 50–950 ramp
primary
#31A0B8
secondary
#C88A7D
accent
#6247E1
background
#F8FBFC
surface
#EFF6F9
border
#CAD0D2
text
#0B1213
muted
#7C8182