#42C5D5#42C5D5
#42C5D5 is a light, moderate teal. Relative luminance 0.459; OKLCH L 76.0% C 0.113 H 206.8°. Best body text is #000000 at 10.18:1 contrast (WCAG AA passes).
Color values
| HEX | #42C5D5 |
|---|---|
| RGB | rgb(66, 197, 213) |
| HSL | hsl(187, 64%, 55%) |
| HSV | hsv(187, 69%, 84%) |
| CMYK | cmyk(69%, 7.5%, 0%, 16.5%) |
| CIE-LAB | lab(73.47, -29.97, -18.34) |
| CIE-LCH | lch(73.47, 35.14, 211.46°) |
| OKLab | oklab(75.98% -0.1008 -0.0509) |
| OKLCH | oklch(75.98% 0.113 206.8) |
| XYZ | xyz(34.2181, 45.8909, 69.9923) |
| Luminance | 0.4590 (WCAG relative) |
| Temperature | cool |
| Family | teal |
Closest named colors
Aqua Blue
#02D8E9
ΔE00 4.94
Turquoise Blue
#06B1C4
ΔE00 5.80
Darkturquoise
#00CED1
ΔE00 6.00
Neon Blue
#04D9FF
ΔE00 7.59
Mediumturquoise
#48D1CC
ΔE00 8.07
Bright Sky Blue
#02CCFE
ΔE00 9.52
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#42C5D5 #D55242
analogous
#42D59C #42C5D5 #427BD5
triadic
#42C5D5 #D542C5 #C5D542
tetradic
#42C5D5 #9C42D5 #D55242 #7BD542
square
#42C5D5 #9C42D5 #D55242 #7BD542
split-complementary
#42C5D5 #D5427B #D59C42
monochromatic
#1C7580 #28A3B2 #42C5D5 #74D4E0 #A6E4EB
Accessibility & contrast
On white
2.06
#42C5D5 on #FFFFFF
AA ✗AA large ✗AAA ✗
On black
10.18
#42C5D5 on #000000
AA ✓AA large ✓AAA ✓
Best text color
#000000 on #42C5D5
10.18:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##42C5D5 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##42C5D5 | 1.00 | 2.06 | 10.18 | 10.18 |
| #FFFFFF | 2.06 | 1.00 | 21.00 | 21.00 |
| #000000 | 10.18 | 21.00 | 1.00 | 1.00 |
| ##000000 | 10.18 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#B5BDD6
Deuteranopia (green-blind)
#9FAED5
Tritanopia (blue-blind)
#00CDCA
Achromatopsia (no color)
#B4B4B4
Design tokens & code
CSS
--color: #42c5d5; /* rgb */ color: rgb(66, 197, 213); /* oklch */ color: oklch(76.0% 0.113 206.8);
Tailwind
colors: {
custom: {
50: '#8ad7e2',
500: '#42c5d5',
950: '#000000',
},
}SCSS
$custom: #42c5d5; $custom-light: #8ad7e2; $custom-dark: #000000;
JSON
{
"hex": "#42c5d5",
"rgb": {
"r": 66,
"g": 197,
"b": 213
},
"hsl": {
"h": 186.531,
"s": 63.636,
"l": 54.706
},
"oklch": {
"l": 0.75977,
"c": 0.11292,
"h": 206.8
},
"luminance": 0.45895
}Semantic roles & 50–950 ramp
primary
#42C5D5
secondary
#D8A19A
accent
#5341E7
background
#F9FDFD
surface
#F1FAFB
border
#CBD3D4
text
#0D1415
muted
#7E8383