#66C970
Closest named color: Soft Green (#6FC276). oklch(75.4% 0.156 145.9), rgb(102, 201, 112).
Aa
Black text reads best on this color (10.15:1).
About this color
#66C970 is a medium-light, vivid green. In OKLCH its lightness is 75%, its chroma 0.156 and its hue 146°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Soft Green (#6FC276), ΔE 0.024 away. Black text reads best on it, at 10.15:1.
| Hue family | Greens |
| Lightness | medium-light (75%) |
| Chroma | vivid (0.156) |
| Temperature | in between |
| Nearest name | Soft Green (#6FC276) |
| Black text | 10.15:1 |
| White text | 2.06:1 |
Values
| HEX | #66C970 |
| RGB | rgb(102, 201, 112) |
| HSL | hsl(126, 48%, 59%) |
| OKLCH | oklch(75.4% 0.156 145.9) |
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 #66C970 | 2.06:1 | Fails | Lc -44.7 | Non-text elements, placeholder text |
| Black text on #66C970 | 10.15:1 | AAA | Lc 63.8 | Content text, not long reading |
| #66C970 text on white | 2.06:1 | Fails | Lc 40.1 | Non-text elements, placeholder text |
| #66C970 text on black | 10.15:1 | AAA | Lc -62.2 | 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 400.
-
Step 50
50
#F0F8F0
oklch(97.1% 0.014 145.5)
-
Step 100
100
#DFEFDF
oklch(93.6% 0.027 145.4)
-
Step 200
200
#C3E3C4
oklch(88.4% 0.054 145.9)
-
Step 300
300
#98D29B
oklch(81% 0.097 145.9)
-
Step 400
400 (this color)
#66C970
oklch(75.4% 0.156 145.9)
-
Step 500
500
#00A634
oklch(63.1% 0.193 145.9)
-
Step 600
600
#008C2A
oklch(55.7% 0.171 145.8)
-
Step 700
700
#007622
oklch(49.2% 0.151 145.8)
-
Step 800
800
#00601A
oklch(42.5% 0.131 145.8)
-
Step 900
900
#005115
oklch(37.8% 0.116 146)
-
Step 950
950
#003009
oklch(26.9% 0.082 146)
#66C970 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) | #CCBA69 | 0.122 |
| Deuteranopia (no green cones) | #BEB176 | 0.120 |
| Tritanopia (no blue cones) | #56C5B4 | 0.094 |
| Achromatopsia (no color) | #B4B4B4 | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66C970
#66C970
oklch(75.4% 0.156 145.9)
- #E18AE4
#E18AE4
oklch(75.4% 0.156 325.8)
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 #66C970, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Green #6FC276 ΔE 0.024
- Dark Mint #48C072 ΔE 0.037
- Seaweed #18D17B ΔE 0.038
- Algae Green #21C36F ΔE 0.045
- Turtle Green #75B84F ΔE 0.048
- Apple #6ECB3C ΔE 0.050
- Dark Mint Green #20C073 ΔE 0.051
- Greenblue #23C48B ΔE 0.052
Use #66C970 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.