#66B2A7
Closest named color: Greeny Blue (#42B395). oklch(71.1% 0.078 183.8), rgb(102, 178, 167).
Aa
Black text reads best on this color (8.49:1).
About this color
#66B2A7 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 71%, its chroma 0.078 and its hue 184°. Its hue sits on the cool side of the wheel. The nearest named color is Greeny Blue (#42B395), ΔE 0.042 away. Black text reads best on it, at 8.49:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Greeny Blue (#42B395) |
| Black text | 8.49:1 |
| White text | 2.47:1 |
Values
| HEX | #66B2A7 |
| RGB | rgb(102, 178, 167) |
| HSL | hsl(171, 33%, 55%) |
| OKLCH | oklch(71.1% 0.078 183.8) |
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 #66B2A7 | 2.47:1 | Fails | Lc -53.5 | Large or bold text, headings |
| Black text on #66B2A7 | 8.49:1 | AAA | Lc 55.5 | Large or bold text, headings |
| #66B2A7 text on white | 2.47:1 | Fails | Lc 48.5 | Large or bold text, headings |
| #66B2A7 text on black | 8.49:1 | AAA | Lc -53.5 | 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
#E0EDEB
oklch(93.6% 0.014 185.9)
-
Step 200
200
#C7DFDB
oklch(88.5% 0.026 184.7)
-
Step 300
300
#9ECBC4
oklch(80.8% 0.048 184.6)
-
Step 400
400 (this color)
#66B2A7
oklch(71.1% 0.078 183.8)
-
Step 500
500
#2D9D90
oklch(63.1% 0.1 183.7)
-
Step 600
600
#00867A
oklch(55.7% 0.099 183.9)
-
Step 700
700
#007066
oklch(49% 0.087 184.2)
-
Step 800
800
#005C53
oklch(42.6% 0.076 183.4)
-
Step 900
900
#054D45
oklch(37.8% 0.065 182.8)
-
Step 950
950
#092D29
oklch(27.1% 0.041 184.6)
#66B2A7 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) | #ABAAA7 | 0.083 |
| Deuteranopia (no green cones) | #9EA1A8 | 0.077 |
| Tritanopia (no blue cones) | #47B5AE | 0.024 |
| Achromatopsia (no color) | #A5A5A5 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66B2A7
#66B2A7
oklch(71.1% 0.078 183.8)
- #CC8E9C
#CC8E9C
oklch(71.2% 0.077 4.4)
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 #66B2A7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greeny Blue #42B395 ΔE 0.042
- Light Sea Green #20B2AA ΔE 0.042
- Topaz #13BBAF ΔE 0.045
- Muted Teal #90B494 ΔE 0.051
- Pewter #96A8A1 ΔE 0.056
- Cadet Blue #5F9EA0 ΔE 0.058
- Tea #65AB7C ΔE 0.059
- Bluegrey #85A3B2 ΔE 0.059
Use #66B2A7 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.