#91B221
Closest named color: Avocado (#90B134). oklch(71.4% 0.164 122.5), rgb(145, 178, 33).
Aa
Black text reads best on this color (8.59:1).
About this color
#91B221 is a medium-light, vivid yellow. In OKLCH its lightness is 71%, its chroma 0.164 and its hue 122°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Avocado (#90B134), ΔE 0.011 away. Black text reads best on it, at 8.59:1.
| Hue family | Yellows |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.164) |
| Temperature | in between |
| Nearest name | Avocado (#90B134) |
| Black text | 8.59:1 |
| White text | 2.44:1 |
Values
| HEX | #91B221 |
| RGB | rgb(145, 178, 33) |
| HSL | hsl(74, 69%, 41%) |
| OKLCH | oklch(71.4% 0.164 122.5) |
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 #91B221 | 2.44:1 | Fails | Lc -52.9 | Large or bold text, headings |
| Black text on #91B221 | 8.59:1 | AAA | Lc 56.1 | Large or bold text, headings |
| #91B221 text on white | 2.44:1 | Fails | Lc 47.9 | Large or bold text, headings |
| #91B221 text on black | 8.59:1 | AAA | Lc -54.1 | 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
#E6EDD8
oklch(93.5% 0.029 122)
-
Step 200
200
#D2E0B6
oklch(88.5% 0.058 122.6)
-
Step 300
300
#B5CC80
oklch(81% 0.103 122.4)
-
Step 400
400 (this color)
#91B221
oklch(71.4% 0.164 122.5)
-
Step 500
500
#799700
oklch(63% 0.154 122.6)
-
Step 600
600
#667F00
oklch(55.6% 0.135 122.3)
-
Step 700
700
#556B00
oklch(49.2% 0.12 122.6)
-
Step 800
800
#455700
oklch(42.6% 0.104 122.4)
-
Step 900
900
#394900
oklch(37.8% 0.092 122.7)
-
Step 950
950
#212B00
oklch(27% 0.066 122.2)
#91B221 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) | #BDA700 | 0.064 |
| Deuteranopia (no green cones) | #B9A631 | 0.067 |
| Tritanopia (no blue cones) | #99A998 | 0.137 |
| Achromatopsia (no color) | #A6A6A6 | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91B221
#91B221
oklch(71.4% 0.164 122.5)
- #B786F7
#B786F7
oklch(71.3% 0.165 302.4)
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 #91B221, 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 0.012
- Pea Green #8EAB12 ΔE 0.020
- Dark Lime #84B701 ΔE 0.025
- Avocado Green #87A922 ΔE 0.029
- Bright Olive #9CBB04 ΔE 0.031
- Pea Soup Green #94A617 ΔE 0.032
- Mustard Green #A8B504 ΔE 0.032
Use #91B221 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.