#66ADBD
Closest named color: Greyblue (#77A1B5). oklch(70.7% 0.075 213.8), rgb(102, 173, 189).
Aa
Black text reads best on this color (8.27:1).
About this color
#66ADBD is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 71%, its chroma 0.075 and its hue 214°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.034 away. Black text reads best on it, at 8.27:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 8.27:1 |
| White text | 2.53:1 |
Values
| HEX | #66ADBD |
| RGB | rgb(102, 173, 189) |
| HSL | hsl(191, 40%, 57%) |
| OKLCH | oklch(70.7% 0.075 213.8) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #66ADBD | 2.53:1 | Fails | Lc -54.7 | Large or bold text, headings |
| Black text on #66ADBD | 8.27:1 | AAA | Lc 54.4 | Large or bold text, headings |
| #66ADBD text on white | 2.53:1 | Fails | Lc 49.6 | Large or bold text, headings |
| #66ADBD text on black | 8.27:1 | AAA | Lc -52.4 | Large or bold text, headings |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 400.
-
Step 50
50
#F1F7F8
oklch(97.2% 0.007 208.8)
-
Step 100
100
#E0ECEF
oklch(93.5% 0.013 214.4)
-
Step 200
200
#C7DEE4
oklch(88.5% 0.026 215.2)
-
Step 300
300
#9FC9D3
oklch(80.9% 0.046 213.9)
-
Step 400
400 (this color)
#66ADBD
oklch(70.7% 0.075 213.8)
-
Step 500
500
#3298AD
oklch(63.1% 0.096 214.4)
-
Step 600
600
#008196
oklch(55.5% 0.098 214.4)
-
Step 700
700
#006D7E
oklch(49.1% 0.086 213.3)
-
Step 800
800
#005968
oklch(42.7% 0.075 214.2)
-
Step 900
900
#094A56
oklch(37.8% 0.063 214.1)
-
Step 950
950
#0A2B32
oklch(26.9% 0.039 214.5)
#66ADBD with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #A1A9BE | 0.069 |
| Deuteranopia (no green cones) | #939EBD | 0.063 |
| Tritanopia (no blue cones) | #3BB4B2 | 0.043 |
| Achromatopsia (no color) | #A3A3A3 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66ADBD
#66ADBD
oklch(70.7% 0.075 213.8)
- #CB9082
#CB9082
oklch(70.7% 0.075 33.8)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #66ADBD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.034
- Bluegrey #85A3B2 ΔE 0.039
- Turquoise Blue #06B1C4 ΔE 0.046
- Bluey Grey #89A0B0 ΔE 0.048
- Cadet Blue #5F9EA0 ΔE 0.054
- Cool Steel #97A7B3 ΔE 0.055
- Light Sea Green #20B2AA ΔE 0.058
- Cool Grey #95A3A6 ΔE 0.059
Use #66ADBD in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.