#66A2BC
Closest named color: Greyblue (#77A1B5). oklch(68.1% 0.073 227.4), rgb(102, 162, 188).
Aa
Black text reads best on this color (7.45:1).
About this color
#66A2BC is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 68%, its chroma 0.073 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.019 away. Black text reads best on it, at 7.45:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.45:1 |
| White text | 2.81:1 |
Values
| HEX | #66A2BC |
| RGB | rgb(102, 162, 188) |
| HSL | hsl(198, 39%, 57%) |
| OKLCH | oklch(68.1% 0.073 227.4) |
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 #66A2BC | 2.81:1 | Fails | Lc -59.3 | Large or bold text, headings |
| Black text on #66A2BC | 7.45:1 | AAA | Lc 50.0 | Large or bold text, headings |
| #66A2BC text on white | 2.81:1 | Fails | Lc 54.0 | Large or bold text, headings |
| #66A2BC text on black | 7.45:1 | AAA | Lc -47.8 | 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
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C9DDE6
oklch(88.5% 0.025 226.5)
-
Step 300
300
#A3C7D8
oklch(80.9% 0.045 228.2)
-
Step 400
400 (this color)
#66A2BC
oklch(68.1% 0.073 227.4)
-
Step 500
500
#4295B5
oklch(63.2% 0.093 226.5)
-
Step 600
600
#187EA1
oklch(55.5% 0.101 227.4)
-
Step 700
700
#036A8A
oklch(49% 0.094 227.8)
-
Step 800
800
#0D5770
oklch(42.7% 0.078 227.1)
-
Step 900
900
#16485B
oklch(37.8% 0.061 227.3)
-
Step 950
950
#0F2A35
oklch(27% 0.038 227.5)
#66A2BC 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) | #94A0BD | 0.055 |
| Deuteranopia (no green cones) | #8896BC | 0.049 |
| Tritanopia (no blue cones) | #3FAAAA | 0.052 |
| Achromatopsia (no color) | #9A9A9A | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66A2BC
#66A2BC
oklch(68.1% 0.073 227.4)
- #BF8B72
#BF8B72
oklch(68.1% 0.073 46.7)
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 #66A2BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.019
- Bluegrey #85A3B2 ΔE 0.037
- Bluey Grey #89A0B0 ΔE 0.041
- Cadet Blue #5F9EA0 ΔE 0.043
- Cool Gray #8D99AE ΔE 0.049
- Turquoise Blue #06B1C4 ΔE 0.057
- Silver Lake Blue #778DA9 ΔE 0.058
- Blue Grey #758DA3 ΔE 0.060
Use #66A2BC 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.