#99B033
Closest named color: Avocado (#90B134). oklch(71.6% 0.149 119.4), rgb(153, 176, 51).
Aa
Black text reads best on this color (8.61:1).
About this color
#99B033 is a medium-light, vivid yellow. In OKLCH its lightness is 72%, its chroma 0.149 and its hue 119°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Avocado (#90B134), ΔE 0.012 away. Black text reads best on it, at 8.61:1.
| Hue family | Yellows |
| Lightness | medium-light (72%) |
| Chroma | vivid (0.149) |
| Temperature | in between |
| Nearest name | Avocado (#90B134) |
| Black text | 8.61:1 |
| White text | 2.43:1 |
Values
| HEX | #99B033 |
| RGB | rgb(153, 176, 51) |
| HSL | hsl(71, 55%, 45%) |
| OKLCH | oklch(71.6% 0.149 119.4) |
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 #99B033 | 2.43:1 | Fails | Lc -52.9 | Large or bold text, headings |
| Black text on #99B033 | 8.61:1 | AAA | Lc 56.1 | Large or bold text, headings |
| #99B033 text on white | 2.43:1 | Fails | Lc 47.9 | Large or bold text, headings |
| #99B033 text on black | 8.61:1 | AAA | Lc -54.1 | Large or bold text, headings |
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
#F4F7EE
oklch(97.1% 0.012 121.7)
-
Step 100
100
#E7EDD9
oklch(93.6% 0.027 120.5)
-
Step 200
200
#D5DFB9
oklch(88.6% 0.052 119.4)
-
Step 300
300
#B9CA85
oklch(81% 0.093 119.8)
-
Step 400
400 (this color)
#99B033
oklch(71.6% 0.149 119.4)
-
Step 500
500
#809500
oklch(63.1% 0.149 119.2)
-
Step 600
600
#6B7D00
oklch(55.5% 0.131 119.3)
-
Step 700
700
#596900
oklch(49% 0.116 119.6)
-
Step 800
800
#495600
oklch(42.7% 0.101 119.3)
-
Step 900
900
#3C4800
oklch(37.7% 0.09 119.9)
-
Step 950
950
#232A00
oklch(26.9% 0.063 118.9)
#99B033 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) | #BBA61E | 0.051 |
| Deuteranopia (no green cones) | #B9A63D | 0.054 |
| Tritanopia (no blue cones) | #A2A798 | 0.127 |
| Achromatopsia (no color) | #A6A6A6 | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99B033
#99B033
oklch(71.6% 0.149 119.4)
- #B18CF2
#B18CF2
oklch(71.5% 0.148 299.4)
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 #99B033, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Avocado #90B134 ΔE 0.012
- Icky Green #8FAE22 ΔE 0.019
- Pea Green #8EAB12 ΔE 0.026
- Pea Soup Green #94A617 ΔE 0.030
- Mustard Green #A8B504 ΔE 0.030
- Avocado Green #87A922 ΔE 0.034
- Bright Olive #9CBB04 ΔE 0.039
- Dark Lime #84B701 ΔE 0.042
Use #99B033 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.