#66B2BF
Closest named color: Greyblue (#77A1B5). oklch(71.9% 0.078 209.7), rgb(102, 178, 191).
Aa
Black text reads best on this color (8.68:1).
About this color
#66B2BF is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 72%, its chroma 0.078 and its hue 210°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.046 away. Black text reads best on it, at 8.68:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 8.68:1 |
| White text | 2.41:1 |
Values
| HEX | #66B2BF |
| RGB | rgb(102, 178, 191) |
| HSL | hsl(189, 41%, 57%) |
| OKLCH | oklch(71.9% 0.078 209.7) |
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 #66B2BF | 2.41:1 | Fails | Lc -52.5 | Large or bold text, headings |
| Black text on #66B2BF | 8.68:1 | AAA | Lc 56.5 | Large or bold text, headings |
| #66B2BF text on white | 2.41:1 | Fails | Lc 47.5 | Large or bold text, headings |
| #66B2BF text on black | 8.68:1 | AAA | Lc -54.5 | 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
#F1F7F8
oklch(97.2% 0.007 208.8)
-
Step 100
100
#E0EDEF
oklch(93.7% 0.014 207.9)
-
Step 200
200
#C6DEE3
oklch(88.4% 0.026 211.6)
-
Step 300
300
#9DCAD2
oklch(81% 0.049 209.6)
-
Step 400
400 (this color)
#66B2BF
oklch(71.9% 0.078 209.7)
-
Step 500
500
#2899AA
oklch(63% 0.099 210)
-
Step 600
600
#008292
oklch(55.6% 0.096 209.8)
-
Step 700
700
#006D7B
oklch(49% 0.085 210.2)
-
Step 800
800
#005A65
oklch(42.8% 0.074 209.1)
-
Step 900
900
#014B54
oklch(37.8% 0.065 208.6)
-
Step 950
950
#072C31
oklch(27% 0.041 208.1)
#66B2BF 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) | #A6ADC0 | 0.074 |
| Deuteranopia (no green cones) | #98A2BF | 0.068 |
| Tritanopia (no blue cones) | #38B8B6 | 0.040 |
| Achromatopsia (no color) | #A7A7A7 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66B2BF
#66B2BF
oklch(71.9% 0.078 209.7)
- #D19288
#D19288
oklch(71.9% 0.078 29.2)
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 #66B2BF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.046
- Bluegrey #85A3B2 ΔE 0.047
- Turquoise Blue #06B1C4 ΔE 0.048
- Bluey Grey #89A0B0 ΔE 0.056
- Light Sea Green #20B2AA ΔE 0.057
- Cool Steel #97A7B3 ΔE 0.057
- Topaz #13BBAF ΔE 0.060
- Pewter #96A8A1 ΔE 0.062
Use #66B2BF 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.