#66CA73
Closest named color: Soft Green (#6FC276). oklch(75.7% 0.155 146.6), rgb(102, 202, 115).
Aa
Black text reads best on this color (10.26:1).
About this color
#66CA73 is a medium-light, vivid green. In OKLCH its lightness is 76%, its chroma 0.155 and its hue 147°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Soft Green (#6FC276), ΔE 0.025 away. Black text reads best on it, at 10.26:1.
| Hue family | Greens |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.155) |
| Temperature | in between |
| Nearest name | Soft Green (#6FC276) |
| Black text | 10.26:1 |
| White text | 2.04:1 |
Values
| HEX | #66CA73 |
| RGB | rgb(102, 202, 115) |
| HSL | hsl(128, 49%, 60%) |
| OKLCH | oklch(75.7% 0.155 146.6) |
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 #66CA73 | 2.04:1 | Fails | Lc -44.1 | Non-text elements, placeholder text |
| Black text on #66CA73 | 10.26:1 | AAA | Lc 64.3 | Content text, not long reading |
| #66CA73 text on white | 2.04:1 | Fails | Lc 39.6 | Non-text elements, placeholder text |
| #66CA73 text on black | 10.26:1 | AAA | Lc -62.7 | 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 400.
-
Step 50
50
#F0F8F0
oklch(97.1% 0.014 145.5)
-
Step 100
100
#DEEFDF
oklch(93.5% 0.028 147)
-
Step 200
200
#C3E3C5
oklch(88.4% 0.053 146.8)
-
Step 300
300
#97D29C
oklch(80.9% 0.097 146.7)
-
Step 400
400 (this color)
#66CA73
oklch(75.7% 0.155 146.6)
-
Step 500
500
#00A639
oklch(63.1% 0.19 146.6)
-
Step 600
600
#008C2F
oklch(55.7% 0.167 146.6)
-
Step 700
700
#007526
oklch(49% 0.147 146.7)
-
Step 800
800
#00601E
oklch(42.6% 0.127 146.7)
-
Step 900
900
#005017
oklch(37.6% 0.113 146.6)
-
Step 950
950
#00300B
oklch(26.9% 0.08 146.8)
#66CA73 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) | #CCBB6C | 0.121 |
| Deuteranopia (no green cones) | #BFB279 | 0.120 |
| Tritanopia (no blue cones) | #55C6B5 | 0.092 |
| Achromatopsia (no color) | #B5B5B5 | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66CA73
#66CA73
oklch(75.7% 0.155 146.6)
- #E38BE4
#E38BE4
oklch(75.8% 0.155 326.6)
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 #66CA73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Green #6FC276 ΔE 0.025
- Seaweed #18D17B ΔE 0.038
- Dark Mint #48C072 ΔE 0.039
- Algae Green #21C36F ΔE 0.047
- Greenblue #23C48B ΔE 0.052
- Turtle Green #75B84F ΔE 0.052
- Apple #6ECB3C ΔE 0.052
- Dark Mint Green #20C073 ΔE 0.052
Use #66CA73 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.