#99C577
Closest named color: Light Moss Green (#A6C875). oklch(77.3% 0.115 132.5), rgb(153, 197, 119).
Aa
Black text reads best on this color (10.60:1).
About this color
#99C577 is a medium-light, moderately saturated green. In OKLCH its lightness is 77%, its chroma 0.115 and its hue 133°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Light Moss Green (#A6C875), ΔE 0.019 away. Black text reads best on it, at 10.60:1.
| Hue family | Greens |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.115) |
| Temperature | in between |
| Nearest name | Light Moss Green (#A6C875) |
| Black text | 10.60:1 |
| White text | 1.97:1 |
Values
| HEX | #99C577 |
| RGB | rgb(153, 197, 119) |
| HSL | hsl(94, 40%, 62%) |
| OKLCH | oklch(77.3% 0.115 132.5) |
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 #99C577 | 1.97:1 | Fails | Lc -42.6 | Non-text elements, placeholder text |
| Black text on #99C577 | 10.60:1 | AAA | Lc 65.7 | Content text, not long reading |
| #99C577 text on white | 1.97:1 | Fails | Lc 38.2 | Non-text elements, placeholder text |
| #99C577 text on black | 10.60:1 | AAA | Lc -64.2 | 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
#F2F8ED
oklch(97.2% 0.016 130.4)
-
Step 100
100
#E2EFD8
oklch(93.6% 0.034 131.3)
-
Step 200
200
#C9E3B7
oklch(88.5% 0.065 132.6)
-
Step 300
300 (this color)
#99C577
oklch(77.3% 0.115 132.5)
-
Step 400
400
#72B725
oklch(70.7% 0.184 132.4)
-
Step 500
500
#5D9E00
oklch(63.1% 0.177 132.5)
-
Step 600
600
#4E8500
oklch(55.6% 0.155 132.4)
-
Step 700
700
#407000
oklch(49.1% 0.138 132.7)
-
Step 800
800
#345C00
oklch(42.8% 0.12 132.5)
-
Step 900
900
#2A4C00
oklch(37.6% 0.105 132.5)
-
Step 950
950
#172E00
oklch(27.1% 0.076 132.8)
#99C577 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) | #CBBA71 | 0.069 |
| Deuteranopia (no green cones) | #C5B77B | 0.069 |
| Tritanopia (no blue cones) | #9ABFB2 | 0.086 |
| Achromatopsia (no color) | #B8B8B8 | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99C577
#99C577
oklch(77.3% 0.115 132.5)
- #CE9FEA
#CE9FEA
oklch(77.2% 0.116 312.4)
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 #99C577, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Moss Green #A6C875 ΔE 0.019
- Tan Green #A9BE70 ΔE 0.024
- Light Olive #ACBF69 ΔE 0.026
- Light Olive Green #A4BE5C ΔE 0.029
- Dark Sea Green #8FBC8F ΔE 0.047
- Lichen #8FB67B ΔE 0.047
- Soft Green #6FC276 ΔE 0.047
- Pale Olive #B9CC81 ΔE 0.048
Use #99C577 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.