#91B540
Closest named color: Avocado (#90B134). oklch(72.3% 0.149 124.7), rgb(145, 181, 64).
Aa
Black text reads best on this color (8.88:1).
About this color
#91B540 is a medium-light, vivid yellow. In OKLCH its lightness is 72%, its chroma 0.149 and its hue 125°. 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 8.88:1.
| Hue family | Yellows |
| Lightness | medium-light (72%) |
| Chroma | vivid (0.149) |
| Temperature | in between |
| Nearest name | Avocado (#90B134) |
| Black text | 8.88:1 |
| White text | 2.36:1 |
Values
| HEX | #91B540 |
| RGB | rgb(145, 181, 64) |
| HSL | hsl(78, 48%, 48%) |
| OKLCH | oklch(72.3% 0.149 124.7) |
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 #91B540 | 2.36:1 | Fails | Lc -51.4 | Large or bold text, headings |
| Black text on #91B540 | 8.88:1 | AAA | Lc 57.5 | Large or bold text, headings |
| #91B540 text on white | 2.36:1 | Fails | Lc 46.5 | Large or bold text, headings |
| #91B540 text on black | 8.88:1 | AAA | Lc -55.6 | 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
#F3F7EE
oklch(97.1% 0.013 126.4)
-
Step 100
100
#E6EDDA
oklch(93.6% 0.026 123.4)
-
Step 200
200
#D1E0BB
oklch(88.6% 0.052 125.4)
-
Step 300
300
#B3CB88
oklch(80.8% 0.093 124.5)
-
Step 400
400 (this color)
#91B540
oklch(72.3% 0.149 124.7)
-
Step 500
500
#759900
oklch(63.3% 0.158 124.6)
-
Step 600
600
#618000
oklch(55.5% 0.139 124.8)
-
Step 700
700
#516C00
oklch(49.2% 0.123 125)
-
Step 800
800
#425800
oklch(42.6% 0.107 124.6)
-
Step 900
900
#374900
oklch(37.6% 0.094 124.1)
-
Step 950
950
#1F2C00
oklch(27.1% 0.068 125.1)
#91B540 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) | #BFAA31 | 0.066 |
| Deuteranopia (no green cones) | #BAA849 | 0.068 |
| Tritanopia (no blue cones) | #97AD9D | 0.121 |
| Achromatopsia (no color) | #A9A9A9 | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91B540
#91B540
oklch(72.3% 0.149 124.7)
- #BB8CF0
#BB8CF0
oklch(72.4% 0.148 304.6)
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 #91B540, 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 0.024
- Turtle Green #75B84F ΔE 0.031
- Pea Green #8EAB12 ΔE 0.033
- Mustard Green #A8B504 ΔE 0.035
- Bright Olive #9CBB04 ΔE 0.036
- Dark Lime #84B701 ΔE 0.037
- Avocado Green #87A922 ΔE 0.039
Use #91B540 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.