#99AE37
Closest named color: Avocado (#90B134). oklch(71.2% 0.144 118.9), rgb(153, 174, 55).
Aa
Black text reads best on this color (8.46:1).
About this color
#99AE37 is a medium-light, vivid yellow. In OKLCH its lightness is 71%, its chroma 0.144 and its hue 119°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Avocado (#90B134), ΔE 0.015 away. Black text reads best on it, at 8.46:1.
| Hue family | Yellows |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.144) |
| Temperature | in between |
| Nearest name | Avocado (#90B134) |
| Black text | 8.46:1 |
| White text | 2.48:1 |
Values
| HEX | #99AE37 |
| RGB | rgb(153, 174, 55) |
| HSL | hsl(71, 52%, 45%) |
| OKLCH | oklch(71.2% 0.144 118.9) |
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 #99AE37 | 2.48:1 | Fails | Lc -53.7 | Large or bold text, headings |
| Black text on #99AE37 | 8.46:1 | AAA | Lc 55.4 | Large or bold text, headings |
| #99AE37 text on white | 2.48:1 | Fails | Lc 48.6 | Large or bold text, headings |
| #99AE37 text on black | 8.46:1 | AAA | Lc -53.3 | 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
#F4F7EE
oklch(97.1% 0.012 121.7)
-
Step 100
100
#E8EDD9
oklch(93.7% 0.027 118.3)
-
Step 200
200
#D5DEBA
oklch(88.4% 0.049 118.8)
-
Step 300
300
#BAC987
oklch(80.9% 0.089 118.9)
-
Step 400
400 (this color)
#99AE37
oklch(71.2% 0.144 118.9)
-
Step 500
500
#819500
oklch(63.2% 0.148 118.8)
-
Step 600
600
#6C7D00
oklch(55.6% 0.13 118.8)
-
Step 700
700
#5A6900
oklch(49.1% 0.115 119)
-
Step 800
800
#4A5600
oklch(42.8% 0.1 118.6)
-
Step 900
900
#3D4800
oklch(37.8% 0.089 119.1)
-
Step 950
950
#232A00
oklch(26.9% 0.063 118.9)
#99AE37 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) | #B9A425 | 0.049 |
| Deuteranopia (no green cones) | #B7A540 | 0.051 |
| Tritanopia (no blue cones) | #A2A596 | 0.122 |
| Achromatopsia (no color) | #A4A4A4 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99AE37
#99AE37
oklch(71.2% 0.144 118.9)
- #AF8CEF
#AF8CEF
oklch(71.2% 0.144 299)
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 #99AE37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Avocado #90B134 ΔE 0.015
- Icky Green #8FAE22 ΔE 0.020
- Pea Soup Green #94A617 ΔE 0.026
- Pea Green #8EAB12 ΔE 0.027
- Avocado Green #87A922 ΔE 0.032
- Mustard Green #A8B504 ΔE 0.036
- Turtle Green #75B84F ΔE 0.045
- Bright Olive #9CBB04 ΔE 0.046
Use #99AE37 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.