#66A8A9
Closest named color: Cadet Blue (#5F9EA0). oklch(68.8% 0.067 196.9), rgb(102, 168, 169).
Aa
Black text reads best on this color (7.73:1).
About this color
#66A8A9 is a medium-light, muted teal or cyan. In OKLCH its lightness is 69%, its chroma 0.067 and its hue 197°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.030 away. Black text reads best on it, at 7.73:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (69%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 7.73:1 |
| White text | 2.71:1 |
Values
| HEX | #66A8A9 |
| RGB | rgb(102, 168, 169) |
| HSL | hsl(181, 28%, 53%) |
| OKLCH | oklch(68.8% 0.067 196.9) |
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 #66A8A9 | 2.71:1 | Fails | Lc -57.7 | Large or bold text, headings |
| Black text on #66A8A9 | 7.73:1 | AAA | Lc 51.5 | Large or bold text, headings |
| #66A8A9 text on white | 2.71:1 | Fails | Lc 52.5 | Large or bold text, headings |
| #66A8A9 text on black | 7.73:1 | AAA | Lc -49.4 | 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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E1ECEC
oklch(93.5% 0.012 197)
-
Step 200
200
#C8DEDE
oklch(88.4% 0.023 196.7)
-
Step 300
300
#A2CACA
oklch(81% 0.042 196.3)
-
Step 400
400 (this color)
#66A8A9
oklch(68.8% 0.067 196.9)
-
Step 500
500
#3D9A9B
oklch(63.2% 0.087 196.2)
-
Step 600
600
#068486
oklch(55.7% 0.094 196.7)
-
Step 700
700
#006F71
oklch(49.1% 0.084 197)
-
Step 800
800
#025B5C
oklch(42.7% 0.072 196.1)
-
Step 900
900
#124B4C
oklch(37.8% 0.057 196.7)
-
Step 950
950
#0E2C2C
oklch(27.1% 0.035 195.3)
#66A8A9 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) | #A0A2A9 | 0.070 |
| Deuteranopia (no green cones) | #9499AA | 0.066 |
| Tritanopia (no blue cones) | #49ACA8 | 0.026 |
| Achromatopsia (no color) | #9D9D9D | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66A8A9
#66A8A9
oklch(68.8% 0.067 196.9)
- #C18A8C
#C18A8C
oklch(68.8% 0.068 16.6)
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 #66A8A9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.030
- Greyblue #77A1B5 ΔE 0.036
- Bluegrey #85A3B2 ΔE 0.041
- Dull Teal #5F9E8F ΔE 0.043
- Bluey Grey #89A0B0 ΔE 0.048
- Light Sea Green #20B2AA ΔE 0.048
- Grey Teal #5E9B8A ΔE 0.053
- Cool Grey #95A3A6 ΔE 0.055
Use #66A8A9 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.