#99B321
Closest named color: Avocado (#90B134). oklch(72.2% 0.162 120), rgb(153, 179, 33).
Aa
Black text reads best on this color (8.82:1).
About this color
#99B321 is a medium-light, vivid yellow. In OKLCH its lightness is 72%, its chroma 0.162 and its hue 120°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Avocado (#90B134), ΔE 0.016 away. Black text reads best on it, at 8.82:1.
| Hue family | Yellows |
| Lightness | medium-light (72%) |
| Chroma | vivid (0.162) |
| Temperature | in between |
| Nearest name | Avocado (#90B134) |
| Black text | 8.82:1 |
| White text | 2.37:1 |
Values
| HEX | #99B321 |
| RGB | rgb(153, 179, 33) |
| HSL | hsl(71, 69%, 42%) |
| OKLCH | oklch(72.2% 0.162 120) |
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 #99B321 | 2.37:1 | Fails | Lc -51.7 | Large or bold text, headings |
| Black text on #99B321 | 8.82:1 | AAA | Lc 57.3 | Large or bold text, headings |
| #99B321 text on white | 2.37:1 | Fails | Lc 46.7 | Large or bold text, headings |
| #99B321 text on black | 8.82:1 | AAA | Lc -55.3 | 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
#F4F7ED
oklch(97.1% 0.014 120.3)
-
Step 100
100
#E7EDD8
oklch(93.6% 0.029 119.9)
-
Step 200
200
#D4DFB6
oklch(88.5% 0.056 119.7)
-
Step 300
300
#B8CB7F
oklch(81% 0.102 120.2)
-
Step 400
400 (this color)
#99B321
oklch(72.2% 0.162 120)
-
Step 500
500
#7F9600
oklch(63.3% 0.15 120)
-
Step 600
600
#6A7E00
oklch(55.7% 0.132 120.1)
-
Step 700
700
#596900
oklch(49% 0.116 119.6)
-
Step 800
800
#485600
oklch(42.6% 0.101 120)
-
Step 900
900
#3C4800
oklch(37.7% 0.09 119.9)
-
Step 950
950
#232B00
oklch(27.2% 0.064 120)
#99B321 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) | #BFA800 | 0.057 |
| Deuteranopia (no green cones) | #BCA831 | 0.060 |
| Tritanopia (no blue cones) | #A2A999 | 0.138 |
| Achromatopsia (no color) | #A8A8A8 | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99B321
#99B321
oklch(72.2% 0.162 120)
- #B68BFB
#B68BFB
oklch(72.3% 0.162 300.1)
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 #99B321, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Avocado #90B134 ΔE 0.016
- Icky Green #8FAE22 ΔE 0.020
- Mustard Green #A8B504 ΔE 0.022
- Bright Olive #9CBB04 ΔE 0.025
- Pea Green #8EAB12 ΔE 0.028
- Dark Lime #84B701 ΔE 0.032
- Pea Soup Green #94A617 ΔE 0.036
- Pea #A4BF20 ΔE 0.037
Use #99B321 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.