#99B53F
Closest named color: Avocado (#90B134). oklch(72.9% 0.146 121.6), rgb(153, 181, 63).
Aa
Black text reads best on this color (9.03:1).
About this color
#99B53F is a medium-light, vivid yellow. In OKLCH its lightness is 73%, its chroma 0.146 and its hue 122°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Avocado (#90B134), ΔE 0.019 away. Black text reads best on it, at 9.03:1.
| Hue family | Yellows |
| Lightness | medium-light (73%) |
| Chroma | vivid (0.146) |
| Temperature | in between |
| Nearest name | Avocado (#90B134) |
| Black text | 9.03:1 |
| White text | 2.32:1 |
Values
| HEX | #99B53F |
| RGB | rgb(153, 181, 63) |
| HSL | hsl(74, 48%, 48%) |
| OKLCH | oklch(72.9% 0.146 121.6) |
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 #99B53F | 2.32:1 | Fails | Lc -50.6 | Large or bold text, headings |
| Black text on #99B53F | 9.03:1 | AAA | Lc 58.3 | Large or bold text, headings |
| #99B53F text on white | 2.32:1 | Fails | Lc 45.7 | Large or bold text, headings |
| #99B53F text on black | 9.03:1 | AAA | Lc -56.4 | 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
#E7EDDA
oklch(93.6% 0.026 121.2)
-
Step 200
200
#D3DFBA
oklch(88.5% 0.051 122.1)
-
Step 300
300
#B7CA87
oklch(80.8% 0.091 121.3)
-
Step 400
400 (this color)
#99B53F
oklch(72.9% 0.146 121.6)
-
Step 500
500
#7B9700
oklch(63.2% 0.153 121.9)
-
Step 600
600
#677E00
oklch(55.5% 0.134 121.5)
-
Step 700
700
#566A00
oklch(49% 0.118 121.7)
-
Step 800
800
#465700
oklch(42.7% 0.103 121.8)
-
Step 900
900
#3A4800
oklch(37.6% 0.091 121.4)
-
Step 950
950
#222B00
oklch(27.1% 0.065 121.1)
#99B53F 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) | #C0AB2F | 0.057 |
| Deuteranopia (no green cones) | #BCAA48 | 0.059 |
| Tritanopia (no blue cones) | #A1AC9D | 0.123 |
| Achromatopsia (no color) | #AAAAAA | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99B53F
#99B53F
oklch(72.9% 0.146 121.6)
- #B88FF4
#B88FF4
oklch(72.8% 0.148 301.6)
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 #99B53F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Avocado #90B134 ΔE 0.019
- Mustard Green #A8B504 ΔE 0.028
- Icky Green #8FAE22 ΔE 0.029
- Bright Olive #9CBB04 ΔE 0.034
- Light Olive Green #A4BE5C ΔE 0.037
- Pea Green #8EAB12 ΔE 0.038
- Pea #A4BF20 ΔE 0.039
- Turtle Green #75B84F ΔE 0.040
Use #99B53F 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.