#99D833
Closest named color: Yellow Green (#9ACD32). oklch(81% 0.197 128.9), rgb(153, 216, 51).
Aa
Black text reads best on this color (12.22:1).
About this color
#99D833 is a light, vivid green. In OKLCH its lightness is 81%, its chroma 0.197 and its hue 129°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Yellow Green (#9ACD32), ΔE 0.030 away. Black text reads best on it, at 12.22:1.
| Hue family | Greens |
| Lightness | light (81%) |
| Chroma | vivid (0.197) |
| Temperature | in between |
| Nearest name | Yellow Green (#9ACD32) |
| Black text | 12.22:1 |
| White text | 1.71:1 |
Values
| HEX | #99D833 |
| RGB | rgb(153, 216, 51) |
| HSL | hsl(83, 68%, 52%) |
| OKLCH | oklch(81% 0.197 128.9) |
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 #99D833 | 1.71:1 | Fails | Lc -34.5 | Non-text elements, placeholder text |
| Black text on #99D833 | 12.22:1 | AAA | Lc 73.1 | Content text, not long reading |
| #99D833 text on white | 1.71:1 | Fails | Lc 30.7 | Non-text elements, placeholder text |
| #99D833 text on black | 12.22:1 | AAA | Lc -72.1 | 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
#F0F9E7
oklch(97.1% 0.026 128.8)
-
Step 100
100
#DEF2CA
oklch(93.6% 0.057 129.2)
-
Step 200
200
#C3E899
oklch(88.6% 0.11 128.8)
-
Step 300
300 (this color)
#99D833
oklch(81% 0.197 128.9)
-
Step 400
400
#7CB500
oklch(70.7% 0.187 128.7)
-
Step 500
500
#699B00
oklch(63% 0.167 128.9)
-
Step 600
600
#588300
oklch(55.7% 0.148 128.9)
-
Step 700
700
#496E00
oklch(49.1% 0.13 129)
-
Step 800
800
#3B5A00
oklch(42.7% 0.113 129)
-
Step 900
900
#314B00
oklch(37.7% 0.1 128.7)
-
Step 950
950
#1B2D00
oklch(27.1% 0.072 129.3)
#99D833 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) | #E3C802 | 0.099 |
| Deuteranopia (no green cones) | #DAC444 | 0.101 |
| Tritanopia (no blue cones) | #9ECEB9 | 0.155 |
| Achromatopsia (no color) | #C5C5C5 | 0.197 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99D833
#99D833
oklch(81% 0.197 128.9)
- #D9AAFF
#D9AAFF
oklch(81% 0.126 309.1)
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 #99D833, closest first.
No curated palette has a color within ΔE 0.04 of #99D833.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Yellow Green #9ACD32 ΔE 0.030
- Slime Green #99CC04 ΔE 0.032
- Kiwi Green #8EE53F ΔE 0.034
- Fresh Green #69D84F ΔE 0.045
- Apple Green #76CD26 ΔE 0.051
- Toxic Green #61DE2A ΔE 0.054
- Green Apple #5EDC1F ΔE 0.057
- Apple #6ECB3C ΔE 0.060
Use #99D833 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.