#66CA98
Closest named color: Medium Aquamarine (#66CDAA). oklch(76.5% 0.12 159.9), rgb(102, 202, 152).
Aa
Black text reads best on this color (10.46:1).
About this color
#66CA98 is a medium-light, moderately saturated green. In OKLCH its lightness is 76%, its chroma 0.120 and its hue 160°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.024 away. Black text reads best on it, at 10.46:1.
| Hue family | Greens |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.120) |
| Temperature | in between |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 10.46:1 |
| White text | 2.00:1 |
Values
| HEX | #66CA98 |
| RGB | rgb(102, 202, 152) |
| HSL | hsl(150, 49%, 60%) |
| OKLCH | oklch(76.5% 0.12 159.9) |
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 #66CA98 | 2.00:1 | Fails | Lc -43.1 | Non-text elements, placeholder text |
| Black text on #66CA98 | 10.46:1 | AAA | Lc 65.2 | Content text, not long reading |
| #66CA98 text on white | 2.00:1 | Fails | Lc 38.7 | Non-text elements, placeholder text |
| #66CA98 text on black | 10.46:1 | AAA | Lc -63.7 | Content text, not long reading |
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 300.
-
Step 50
50
#EDF9F2
oklch(97.1% 0.016 160.6)
-
Step 100
100
#D7F1E2
oklch(93.5% 0.034 160.4)
-
Step 200
200
#B4E7CA
oklch(88.5% 0.066 159.8)
-
Step 300
300 (this color)
#66CA98
oklch(76.5% 0.12 159.9)
-
Step 400
400
#00BE7D
oklch(70.7% 0.16 159.9)
-
Step 500
500
#00A36A
oklch(63.1% 0.143 159.7)
-
Step 600
600
#008959
oklch(55.6% 0.126 160)
-
Step 700
700
#00734A
oklch(49% 0.111 160)
-
Step 800
800
#005F3C
oklch(42.8% 0.097 159.8)
-
Step 900
900
#004F31
oklch(37.7% 0.086 159.7)
-
Step 950
950
#002F1C
oklch(26.9% 0.06 160.5)
#66CA98 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) | #C8BD95 | 0.114 |
| Deuteranopia (no green cones) | #B9B39B | 0.110 |
| Tritanopia (no blue cones) | #48C9BC | 0.052 |
| Achromatopsia (no color) | #B7B7B7 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66CA98
#66CA98
oklch(76.5% 0.12 159.9)
- #E594CB
#E594CB
oklch(76.5% 0.119 339.6)
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 #66CA98, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.024
- Soft Green #6FC276 ΔE 0.041
- Emerald #06D6A0 ΔE 0.045
- Seafoam Blue #78D1B6 ΔE 0.047
- Pale Teal #82CBB2 ΔE 0.048
- Greenblue #23C48B ΔE 0.048
- Dark Sea Green #8FBC8F ΔE 0.050
- Green Blue #01C08D ΔE 0.058
Use #66CA98 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.