#66ACCA
Closest named color: Greyblue (#77A1B5). oklch(71% 0.083 227.5), rgb(102, 172, 202).
Aa
Black text reads best on this color (8.31:1).
About this color
#66ACCA is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 71%, its chroma 0.083 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.038 away. Black text reads best on it, at 8.31:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 8.31:1 |
| White text | 2.52:1 |
Values
| HEX | #66ACCA |
| RGB | rgb(102, 172, 202) |
| HSL | hsl(198, 49%, 60%) |
| OKLCH | oklch(71% 0.083 227.5) |
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 #66ACCA | 2.52:1 | Fails | Lc -54.5 | Large or bold text, headings |
| Black text on #66ACCA | 8.31:1 | AAA | Lc 54.6 | Large or bold text, headings |
| #66ACCA text on white | 2.52:1 | Fails | Lc 49.4 | Large or bold text, headings |
| #66ACCA text on black | 8.31:1 | AAA | Lc -52.6 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E0ECF2
oklch(93.6% 0.015 229)
-
Step 200
200
#C6DDE8
oklch(88.4% 0.029 228.1)
-
Step 300
300
#9EC8DB
oklch(80.9% 0.052 227.3)
-
Step 400
400 (this color)
#66ACCA
oklch(71% 0.083 227.5)
-
Step 500
500
#3196BB
oklch(63.2% 0.106 226.9)
-
Step 600
600
#007FA4
oklch(55.6% 0.108 227.1)
-
Step 700
700
#006B8B
oklch(49.2% 0.095 227.3)
-
Step 800
800
#005772
oklch(42.6% 0.083 227.6)
-
Step 900
900
#09485E
oklch(37.6% 0.069 228)
-
Step 950
950
#0A2B37
oklch(27.2% 0.043 226.1)
#66ACCA 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) | #9CA9CC | 0.062 |
| Deuteranopia (no green cones) | #8E9ECA | 0.056 |
| Tritanopia (no blue cones) | #30B5B6 | 0.059 |
| Achromatopsia (no color) | #A3A3A3 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66ACCA
#66ACCA
oklch(71% 0.083 227.5)
- #CD9274
#CD9274
oklch(71% 0.083 47.9)
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 #66ACCA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.038
- Bluegrey #85A3B2 ΔE 0.045
- Turquoise Blue #06B1C4 ΔE 0.051
- Bluey Grey #89A0B0 ΔE 0.052
- Cool Steel #97A7B3 ΔE 0.060
- Cool Gray #8D99AE ΔE 0.065
- Cadet Blue #5F9EA0 ΔE 0.066
- Cool Grey #95A3A6 ΔE 0.067
Use #66ACCA 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.