#40A3BC#40A3BC
#40A3BC is a light, moderate cyan. Relative luminance 0.309; OKLCH L 66.8% C 0.098 H 217.6°. Best body text is #000000 at 7.18:1 contrast (WCAG AA passes).
Color values
| HEX | #40A3BC |
|---|---|
| RGB | rgb(64, 163, 188) |
| HSL | hsl(192, 49%, 49%) |
| HSV | hsv(192, 66%, 74%) |
| CMYK | cmyk(66%, 13.3%, 0%, 26.3%) |
| CIE-LAB | lab(62.43, -20.80, -21.35) |
| CIE-LCH | lch(62.43, 29.81, 225.75°) |
| OKLab | oklab(66.79% -0.0773 -0.0594) |
| OKLCH | oklch(66.79% 0.098 217.6) |
| XYZ | xyz(24.2849, 30.9126, 52.2541) |
| Luminance | 0.3091 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Turquoise Blue
#06B1C4
ΔE00 5.83
Greyblue
#77A1B5
ΔE00 7.58
Cadetblue
#5F9EA0
ΔE00 8.41
Teal Blue
#01889F
ΔE00 9.63
Bluegrey
#85A3B2
ΔE00 10.27
Dirty Blue
#3F829D
ΔE00 11.32
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#40A3BC #BC5940
analogous
#40BC97 #40A3BC #4065BC
triadic
#40A3BC #BC40A3 #A3BC40
tetradic
#40A3BC #9740BC #BC5940 #65BC40
square
#40A3BC #9740BC #BC5940 #65BC40
split-complementary
#40A3BC #BC4065 #BC9740
monochromatic
#215461 #307B8E #40A3BC #6CB9CD #9ACFDD
Accessibility & contrast
On white
2.92
#40A3BC on #FFFFFF
AA ✗AA large ✗AAA ✗
On black
7.18
#40A3BC on #000000
AA ✓AA large ✓AAA ✓
Best text color
#000000 on #40A3BC
7.18:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##40A3BC | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##40A3BC | 1.00 | 2.92 | 7.18 | 7.18 |
| #FFFFFF | 2.92 | 1.00 | 21.00 | 21.00 |
| #000000 | 7.18 | 21.00 | 1.00 | 1.00 |
| ##000000 | 7.18 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#939EBD
Deuteranopia (green-blind)
#8191BC
Tritanopia (blue-blind)
#00ACAB
Achromatopsia (no color)
#979797
Design tokens & code
CSS
--color: #40a3bc; /* rgb */ color: rgb(64, 163, 188); /* oklch */ color: oklch(66.8% 0.098 217.6);
Tailwind
colors: {
custom: {
50: '#83bed0',
500: '#40a3bc',
950: '#000000',
},
}SCSS
$custom: #40a3bc; $custom-light: #83bed0; $custom-dark: #000000;
JSON
{
"hex": "#40a3bc",
"rgb": {
"r": 64,
"g": 163,
"b": 188
},
"hsl": {
"h": 192.097,
"s": 49.206,
"l": 49.412
},
"oklch": {
"l": 0.66786,
"c": 0.09751,
"h": 217.6
},
"luminance": 0.30915
}Semantic roles & 50–950 ramp
primary
#40A3BC
secondary
#C99B8F
accent
#6B4FD9
background
#F8FBFC
surface
#F0F6F9
border
#CBD0D2
text
#0C1214
muted
#7D8182