#91B508
Closest named color: Dark Lime (#84B701). oklch(72% 0.175 122.9), rgb(145, 181, 8).
Aa
Black text reads best on this color (8.81:1).
About this color
#91B508 is a medium-light, vivid yellow. In OKLCH its lightness is 72%, its chroma 0.175 and its hue 123°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Lime (#84B701), ΔE 0.017 away. Black text reads best on it, at 8.81:1.
| Hue family | Yellows |
| Lightness | medium-light (72%) |
| Chroma | vivid (0.175) |
| Temperature | in between |
| Nearest name | Dark Lime (#84B701) |
| Black text | 8.81:1 |
| White text | 2.38:1 |
Values
| HEX | #91B508 |
| RGB | rgb(145, 181, 8) |
| HSL | hsl(72, 92%, 37%) |
| OKLCH | oklch(72% 0.175 122.9) |
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 #91B508 | 2.38:1 | Fails | Lc -51.7 | Large or bold text, headings |
| Black text on #91B508 | 8.81:1 | AAA | Lc 57.3 | Large or bold text, headings |
| #91B508 text on white | 2.38:1 | Fails | Lc 46.7 | Large or bold text, headings |
| #91B508 text on black | 8.81:1 | AAA | Lc -55.3 | 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
#F3F7ED
oklch(97% 0.014 124.6)
-
Step 100
100
#E6EED7
oklch(93.7% 0.032 122.7)
-
Step 200
200
#D1E0B4
oklch(88.4% 0.061 122.9)
-
Step 300
300
#B3CC7C
oklch(80.8% 0.108 123)
-
Step 400
400 (this color)
#91B508
oklch(72% 0.175 122.9)
-
Step 500
500
#799700
oklch(63% 0.154 122.6)
-
Step 600
600
#657F00
oklch(55.6% 0.136 122.8)
-
Step 700
700
#546B00
oklch(49.1% 0.121 123.1)
-
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)
#91B508 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) | #C0A900 | 0.071 |
| Deuteranopia (no green cones) | #BCA825 | 0.071 |
| Tritanopia (no blue cones) | #99AB9A | 0.147 |
| Achromatopsia (no color) | #A8A8A8 | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91B508
#91B508
oklch(72% 0.175 122.9)
- #BB86FE
#BB86FE
oklch(72.1% 0.175 302.6)
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 #91B508, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Lime #84B701 ΔE 0.017
- Icky Green #8FAE22 ΔE 0.023
- Bright Olive #9CBB04 ΔE 0.023
- Avocado #90B134 ΔE 0.023
- Pea Green #8EAB12 ΔE 0.029
- Dark Lime Green #7EBD01 ΔE 0.030
- Mustard Green #A8B504 ΔE 0.031
- Avocado Green #87A922 ΔE 0.039
Use #91B508 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.