#91B537
Closest named color: Avocado (#90B134). oklch(72.2% 0.156 124.1), rgb(145, 181, 55).
Aa
Black text reads best on this color (8.86:1).
About this color
#91B537 is a medium-light, vivid yellow. In OKLCH its lightness is 72%, its chroma 0.156 and its hue 124°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Avocado (#90B134), ΔE 0.011 away. Black text reads best on it, at 8.86:1.
| Hue family | Yellows |
| Lightness | medium-light (72%) |
| Chroma | vivid (0.156) |
| Temperature | in between |
| Nearest name | Avocado (#90B134) |
| Black text | 8.86:1 |
| White text | 2.36:1 |
Values
| HEX | #91B537 |
| RGB | rgb(145, 181, 55) |
| HSL | hsl(77, 53%, 46%) |
| OKLCH | oklch(72.2% 0.156 124.1) |
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 #91B537 | 2.36:1 | Fails | Lc -51.5 | Large or bold text, headings |
| Black text on #91B537 | 8.86:1 | AAA | Lc 57.5 | Large or bold text, headings |
| #91B537 text on white | 2.36:1 | Fails | Lc 46.5 | Large or bold text, headings |
| #91B537 text on black | 8.86:1 | AAA | Lc -55.5 | 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
#E6EDD9
oklch(93.5% 0.028 122.7)
-
Step 200
200
#D1E0B9
oklch(88.5% 0.054 124.6)
-
Step 300
300
#B3CC85
oklch(80.9% 0.098 124.3)
-
Step 400
400 (this color)
#91B537
oklch(72.2% 0.156 124.1)
-
Step 500
500
#769800
oklch(63.1% 0.157 124)
-
Step 600
600
#628000
oklch(55.6% 0.139 124.4)
-
Step 700
700
#526B00
oklch(49% 0.122 124.1)
-
Step 800
800
#435800
oklch(42.7% 0.106 124.1)
-
Step 900
900
#374900
oklch(37.6% 0.094 124.1)
-
Step 950
950
#202B00
oklch(26.9% 0.066 123.3)
#91B537 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) | #BFAA23 | 0.066 |
| Deuteranopia (no green cones) | #BAA841 | 0.068 |
| Tritanopia (no blue cones) | #98AC9C | 0.128 |
| Achromatopsia (no color) | #A8A8A8 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91B537
#91B537
oklch(72.2% 0.156 124.1)
- #BB8AF4
#BB8AF4
oklch(72.2% 0.156 304.1)
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 #91B537, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Avocado #90B134 ΔE 0.011
- Icky Green #8FAE22 ΔE 0.021
- Pea Green #8EAB12 ΔE 0.030
- Bright Olive #9CBB04 ΔE 0.031
- Dark Lime #84B701 ΔE 0.031
- Mustard Green #A8B504 ΔE 0.032
- Turtle Green #75B84F ΔE 0.032
- Avocado Green #87A922 ΔE 0.037
Use #91B537 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.