#66A993
Closest named color: Dull Teal (#5F9E8F). oklch(68.4% 0.076 171), rgb(102, 169, 147).
Aa
Black text reads best on this color (7.66:1).
About this color
#66A993 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 68%, its chroma 0.076 and its hue 171°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Teal (#5F9E8F), ΔE 0.033 away. Black text reads best on it, at 7.66:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Dull Teal (#5F9E8F) |
| Black text | 7.66:1 |
| White text | 2.74:1 |
Values
| HEX | #66A993 |
| RGB | rgb(102, 169, 147) |
| HSL | hsl(160, 28%, 53%) |
| OKLCH | oklch(68.4% 0.076 171) |
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 #66A993 | 2.74:1 | Fails | Lc -58.1 | Large or bold text, headings |
| Black text on #66A993 | 7.66:1 | AAA | Lc 51.1 | Large or bold text, headings |
| #66A993 text on white | 2.74:1 | Fails | Lc 52.9 | Large or bold text, headings |
| #66A993 text on black | 7.66:1 | AAA | Lc -49.0 | 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
#F1F7F5
oklch(97.1% 0.007 174.4)
-
Step 100
100
#E1EDE8
oklch(93.6% 0.014 169.2)
-
Step 200
200
#C9DFD7
oklch(88.5% 0.026 171.9)
-
Step 300
300
#A3CBBC
oklch(80.9% 0.047 170.3)
-
Step 400
400 (this color)
#66A993
oklch(68.4% 0.076 171)
-
Step 500
500
#409D81
oklch(63.2% 0.098 170.3)
-
Step 600
600
#0D876B
oklch(55.6% 0.106 171)
-
Step 700
700
#007259
oklch(49.1% 0.097 170.7)
-
Step 800
800
#065D49
oklch(42.7% 0.081 171.2)
-
Step 900
900
#144C3D
oklch(37.6% 0.063 171.4)
-
Step 950
950
#0E2D24
oklch(27.1% 0.041 171.3)
#66A993 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) | #A5A192 | 0.078 |
| Deuteranopia (no green cones) | #9A9994 | 0.075 |
| Tritanopia (no blue cones) | #52AAA2 | 0.025 |
| Achromatopsia (no color) | #9C9C9C | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66A993
#66A993
oklch(68.4% 0.076 171)
- #BE869F
#BE869F
oklch(68.3% 0.076 350.9)
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 #66A993, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Teal #5F9E8F ΔE 0.033
- Tea #65AB7C ΔE 0.035
- Greeny Blue #42B395 ΔE 0.037
- Greeny Grey #7EA07A ΔE 0.039
- Grey Teal #5E9B8A ΔE 0.042
- Grey Green #86A17D ΔE 0.042
- Cadet Blue #5F9EA0 ΔE 0.044
- Dusty Green #76A973 ΔE 0.045
Use #66A993 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.