#66CB73
Closest named color: Soft Green (#6FC276). oklch(76% 0.156 146.5), rgb(102, 203, 115).
Aa
Black text reads best on this color (10.35:1).
About this color
#66CB73 is a medium-light, vivid green. In OKLCH its lightness is 76%, its chroma 0.156 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 0.027 away. Black text reads best on it, at 10.35:1.
| Hue family | Greens |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.156) |
| Temperature | in between |
| Nearest name | Soft Green (#6FC276) |
| Black text | 10.35:1 |
| White text | 2.02:1 |
Values
| HEX | #66CB73 |
| RGB | rgb(102, 203, 115) |
| HSL | hsl(128, 49%, 60%) |
| OKLCH | oklch(76% 0.156 146.5) |
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 #66CB73 | 2.02:1 | Fails | Lc -43.7 | Non-text elements, placeholder text |
| Black text on #66CB73 | 10.35:1 | AAA | Lc 64.8 | Content text, not long reading |
| #66CB73 text on white | 2.02:1 | Fails | Lc 39.2 | Non-text elements, placeholder text |
| #66CB73 text on black | 10.35:1 | AAA | Lc -63.2 | 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 300.
-
Step 50
50
#EDFAED
oklch(97.2% 0.022 145.4)
-
Step 100
100
#D7F3D9
oklch(93.7% 0.045 147.2)
-
Step 200
200
#B4E9B8
oklch(88.5% 0.086 146.8)
-
Step 300
300 (this color)
#66CB73
oklch(76% 0.156 146.5)
-
Step 400
400
#00C143
oklch(70.6% 0.213 146.5)
-
Step 500
500
#00A639
oklch(63.1% 0.19 146.6)
-
Step 600
600
#008C2E
oklch(55.7% 0.168 146.5)
-
Step 700
700
#007526
oklch(49% 0.147 146.7)
-
Step 800
800
#00601D
oklch(42.6% 0.128 146.5)
-
Step 900
900
#005017
oklch(37.6% 0.113 146.6)
-
Step 950
950
#00300A
oklch(26.9% 0.081 146.4)
#66CB73 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) | #CDBC6C | 0.122 |
| Deuteranopia (no green cones) | #BFB279 | 0.121 |
| Tritanopia (no blue cones) | #55C7B6 | 0.093 |
| Achromatopsia (no color) | #B6B6B6 | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66CB73
#66CB73
oklch(76% 0.156 146.5)
- #E48BE5
#E48BE5
oklch(76% 0.157 326.6)
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 #66CB73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Green #6FC276 ΔE 0.027
- Seaweed #18D17B ΔE 0.037
- Dark Mint #48C072 ΔE 0.041
- Algae Green #21C36F ΔE 0.049
- Apple #6ECB3C ΔE 0.051
- Greenblue #23C48B ΔE 0.053
- Turtle Green #75B84F ΔE 0.054
- Dark Mint Green #20C073 ΔE 0.054
Use #66CB73 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.