#66A698
Closest named color: Dull Teal (#5F9E8F). oklch(67.8% 0.069 178.6), rgb(102, 166, 152).
Aa
Black text reads best on this color (7.47:1).
About this color
#66A698 is a medium-light, muted teal or cyan. In OKLCH its lightness is 68%, its chroma 0.069 and its hue 179°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Teal (#5F9E8F), ΔE 0.026 away. Black text reads best on it, at 7.47:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (68%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Dull Teal (#5F9E8F) |
| Black text | 7.47:1 |
| White text | 2.81:1 |
Values
| HEX | #66A698 |
| RGB | rgb(102, 166, 152) |
| HSL | hsl(167, 26%, 53%) |
| OKLCH | oklch(67.8% 0.069 178.6) |
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 #66A698 | 2.81:1 | Fails | Lc -59.2 | Large or bold text, headings |
| Black text on #66A698 | 7.47:1 | AAA | Lc 50.1 | Large or bold text, headings |
| #66A698 text on white | 2.81:1 | Fails | Lc 53.9 | Large or bold text, headings |
| #66A698 text on black | 7.47:1 | AAA | Lc -47.9 | 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2EDEA
oklch(93.7% 0.012 178)
-
Step 200
200
#C9DFD9
oklch(88.6% 0.025 177.6)
-
Step 300
300
#A3CAC1
oklch(80.8% 0.043 179.5)
-
Step 400
400 (this color)
#66A698
oklch(67.8% 0.069 178.6)
-
Step 500
500
#439B8A
oklch(63.1% 0.089 178.6)
-
Step 600
600
#178574
oklch(55.5% 0.096 179)
-
Step 700
700
#017161
oklch(49.1% 0.09 178.3)
-
Step 800
800
#0C5C4F
oklch(42.7% 0.075 178.2)
-
Step 900
900
#164C42
oklch(37.8% 0.059 178.3)
-
Step 950
950
#0F2C27
oklch(26.9% 0.036 180.5)
#66A698 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) | #A19F97 | 0.073 |
| Deuteranopia (no green cones) | #969799 | 0.069 |
| Tritanopia (no blue cones) | #51A8A2 | 0.021 |
| Achromatopsia (no color) | #9A9A9A | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66A698
#66A698
oklch(67.8% 0.069 178.6)
- #BC8697
#BC8697
oklch(67.8% 0.07 358.6)
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 #66A698, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Teal #5F9E8F ΔE 0.026
- Cadet Blue #5F9EA0 ΔE 0.031
- Grey Teal #5E9B8A ΔE 0.035
- Greeny Grey #7EA07A ΔE 0.044
- Grey Green #86A17D ΔE 0.046
- Greeny Blue #42B395 ΔE 0.046
- Tea #65AB7C ΔE 0.047
- Light Sea Green #20B2AA ΔE 0.049
Use #66A698 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.