#66BBAD
Closest named color: Topaz (#13BBAF). oklch(73.4% 0.086 182), rgb(102, 187, 173).
Aa
Black text reads best on this color (9.27:1).
About this color
#66BBAD is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 73%, its chroma 0.086 and its hue 182°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.043 away. Black text reads best on it, at 9.27:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 9.27:1 |
| White text | 2.26:1 |
Values
| HEX | #66BBAD |
| RGB | rgb(102, 187, 173) |
| HSL | hsl(170, 38%, 57%) |
| OKLCH | oklch(73.4% 0.086 182) |
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 #66BBAD | 2.26:1 | Fails | Lc -49.3 | Large or bold text, headings |
| Black text on #66BBAD | 9.27:1 | AAA | Lc 59.5 | Large or bold text, headings |
| #66BBAD text on white | 2.26:1 | Fails | Lc 44.5 | Non-text elements, placeholder text |
| #66BBAD text on black | 9.27:1 | AAA | Lc -57.6 | 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
#DFEDEA
oklch(93.5% 0.015 181.8)
-
Step 200
200
#C5E0DA
oklch(88.5% 0.03 180.7)
-
Step 300
300
#9BCCC3
oklch(80.8% 0.053 182.4)
-
Step 400
400 (this color)
#66BBAD
oklch(73.4% 0.086 182)
-
Step 500
500
#159F8E
oklch(63.2% 0.11 181.5)
-
Step 600
600
#008678
oklch(55.6% 0.1 182.2)
-
Step 700
700
#007164
oklch(49.2% 0.089 181.2)
-
Step 800
800
#005C52
oklch(42.6% 0.076 182.2)
-
Step 900
900
#004D44
oklch(37.7% 0.068 181.7)
-
Step 950
950
#042E28
oklch(27.2% 0.046 180.9)
#66BBAD 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) | #B4B2AC | 0.091 |
| Deuteranopia (no green cones) | #A6A8AE | 0.086 |
| Tritanopia (no blue cones) | #42BEB7 | 0.026 |
| Achromatopsia (no color) | #ACACAC | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66BBAD
#66BBAD
oklch(73.4% 0.086 182)
- #D792A5
#D792A5
oklch(73.4% 0.086 1.5)
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 #66BBAD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.043
- Muted Teal #90B494 ΔE 0.049
- Greeny Blue #42B395 ΔE 0.050
- Light Sea Green #20B2AA ΔE 0.053
- Medium Aquamarine #66CDAA ΔE 0.053
- Pale Teal #82CBB2 ΔE 0.055
- Dark Sea Green #8FBC8F ΔE 0.056
- Medium Turquoise #48D1CC ΔE 0.063
Use #66BBAD 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.