#AAD400
Closest named color: Slime Green (#99CC04). oklch(81% 0.198 122.9), rgb(170, 212, 0).
Aa
Black text reads best on this color (12.12:1).
About this color
#AAD400 is a light, vivid yellow. In OKLCH its lightness is 81%, its chroma 0.198 and its hue 123°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Slime Green (#99CC04), ΔE 0.032 away. Black text reads best on it, at 12.12:1.
| Hue family | Yellows |
| Lightness | light (81%) |
| Chroma | vivid (0.198) |
| Temperature | in between |
| Nearest name | Slime Green (#99CC04) |
| Black text | 12.12:1 |
| White text | 1.73:1 |
Values
| HEX | #AAD400 |
| RGB | rgb(170, 212, 0) |
| HSL | hsl(72, 100%, 42%) |
| OKLCH | oklch(81% 0.198 122.9) |
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 #AAD400 | 1.73:1 | Fails | Lc -35.0 | Non-text elements, placeholder text |
| Black text on #AAD400 | 12.12:1 | AAA | Lc 72.7 | Content text, not long reading |
| #AAD400 text on white | 1.73:1 | Fails | Lc 31.1 | Non-text elements, placeholder text |
| #AAD400 text on black | 12.12:1 | AAA | Lc -71.6 | 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
#F2F9E5
oklch(97.1% 0.027 122.7)
-
Step 100
100
#E2F1C7
oklch(93.6% 0.057 123.5)
-
Step 200
200
#CBE593
oklch(88.4% 0.11 123)
-
Step 300
300 (this color)
#AAD400
oklch(81% 0.198 122.9)
-
Step 400
400
#8DB100
oklch(70.8% 0.174 123)
-
Step 500
500
#799700
oklch(63% 0.154 122.6)
-
Step 600
600
#657F00
oklch(55.6% 0.136 122.8)
-
Step 700
700
#546B00
oklch(49.1% 0.121 123.1)
-
Step 800
800
#455700
oklch(42.6% 0.104 122.4)
-
Step 900
900
#394900
oklch(37.8% 0.092 122.7)
-
Step 950
950
#212B00
oklch(27% 0.066 122.2)
#AAD400 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) | #E1C600 | 0.081 |
| Deuteranopia (no green cones) | #DCC52A | 0.080 |
| Tritanopia (no blue cones) | #B4C9B4 | 0.165 |
| Achromatopsia (no color) | #C5C5C5 | 0.199 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AAD400
#AAD400
oklch(81% 0.198 122.9)
- #D0AFFF
#D0AFFF
oklch(81.1% 0.115 302.8)
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 #AAD400, closest first.
No curated palette has a color within ΔE 0.04 of #AAD400.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slime Green #99CC04 ΔE 0.032
- Yellow Green #9ACD32 ΔE 0.032
- Kiwi Green #8EE53F ΔE 0.048
- Pea #A4BF20 ΔE 0.060
- Apple Green #76CD26 ΔE 0.062
- Fresh Green #69D84F ΔE 0.064
- Kiwi #9CEF43 ΔE 0.068
- Toxic Green #61DE2A ΔE 0.070
Use #AAD400 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.