#66ADA0
Closest named color: Greeny Blue (#42B395). oklch(69.7% 0.075 181), rgb(102, 173, 160).
Aa
Black text reads best on this color (8.04:1).
About this color
#66ADA0 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 70%, its chroma 0.075 and its hue 181°. Its hue sits on the cool side of the wheel. The nearest named color is Greeny Blue (#42B395), ΔE 0.040 away. Black text reads best on it, at 8.04:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Greeny Blue (#42B395) |
| Black text | 8.04:1 |
| White text | 2.60:1 |
Values
| HEX | #66ADA0 |
| RGB | rgb(102, 173, 160) |
| HSL | hsl(169, 30%, 54%) |
| OKLCH | oklch(69.7% 0.075 181) |
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 #66ADA0 | 2.60:1 | Fails | Lc -56.0 | Large or bold text, headings |
| Black text on #66ADA0 | 8.04:1 | AAA | Lc 53.2 | Large or bold text, headings |
| #66ADA0 text on white | 2.60:1 | Fails | Lc 50.8 | Large or bold text, headings |
| #66ADA0 text on black | 8.04:1 | AAA | Lc -51.1 | 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
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E1EDEA
oklch(93.6% 0.013 179.5)
-
Step 200
200
#C8DFDA
oklch(88.5% 0.025 181.2)
-
Step 300
300
#A0CBC2
oklch(80.9% 0.047 180.9)
-
Step 400
400 (this color)
#66ADA0
oklch(69.7% 0.075 181)
-
Step 500
500
#379C8D
oklch(63% 0.095 181.5)
-
Step 600
600
#008677
oklch(55.6% 0.1 181.4)
-
Step 700
700
#007163
oklch(49.2% 0.089 180.3)
-
Step 800
800
#005C51
oklch(42.6% 0.077 181.1)
-
Step 900
900
#0E4C43
oklch(37.6% 0.062 180.7)
-
Step 950
950
#0C2D27
oklch(27.1% 0.04 179.1)
#66ADA0 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) | #A7A5A0 | 0.079 |
| Deuteranopia (no green cones) | #9B9DA1 | 0.074 |
| Tritanopia (no blue cones) | #4CAFA9 | 0.022 |
| Achromatopsia (no color) | #A0A0A0 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66ADA0
#66ADA0
oklch(69.7% 0.075 181)
- #C58A9B
#C58A9B
oklch(69.7% 0.075 0.4)
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 #66ADA0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greeny Blue #42B395 ΔE 0.040
- Light Sea Green #20B2AA ΔE 0.042
- Dull Teal #5F9E8F ΔE 0.045
- Cadet Blue #5F9EA0 ΔE 0.046
- Tea #65AB7C ΔE 0.050
- Topaz #13BBAF ΔE 0.052
- Grey Green #86A17D ΔE 0.054
- Greeny Grey #7EA07A ΔE 0.055
Use #66ADA0 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.