#91B004
Closest named color: Icky Green (#8FAE22). oklch(70.8% 0.17 121.5), rgb(145, 176, 4).
Aa
Black text reads best on this color (8.41:1).
About this color
#91B004 is a medium-light, vivid yellow. In OKLCH its lightness is 71%, its chroma 0.170 and its hue 121°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Icky Green (#8FAE22), ΔE 0.011 away. Black text reads best on it, at 8.41:1.
| Hue family | Yellows |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.170) |
| Temperature | in between |
| Nearest name | Icky Green (#8FAE22) |
| Black text | 8.41:1 |
| White text | 2.49:1 |
Values
| HEX | #91B004 |
| RGB | rgb(145, 176, 4) |
| HSL | hsl(71, 96%, 35%) |
| OKLCH | oklch(70.8% 0.17 121.5) |
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 #91B004 | 2.49:1 | Fails | Lc -53.8 | Large or bold text, headings |
| Black text on #91B004 | 8.41:1 | AAA | Lc 55.2 | Large or bold text, headings |
| #91B004 text on white | 2.49:1 | Fails | Lc 48.8 | Large or bold text, headings |
| #91B004 text on black | 8.41:1 | AAA | Lc -53.2 | 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
#E6EDD7
oklch(93.5% 0.03 121.4)
-
Step 200
200
#D3E0B5
oklch(88.6% 0.059 121.3)
-
Step 300
300
#B6CC7C
oklch(81% 0.107 121.4)
-
Step 400
400 (this color)
#91B004
oklch(70.8% 0.17 121.5)
-
Step 500
500
#7C9600
oklch(63% 0.151 121.2)
-
Step 600
600
#677E00
oklch(55.5% 0.134 121.5)
-
Step 700
700
#576A00
oklch(49.1% 0.118 121.1)
-
Step 800
800
#465700
oklch(42.7% 0.103 121.8)
-
Step 900
900
#3A4800
oklch(37.6% 0.091 121.4)
-
Step 950
950
#222B00
oklch(27.1% 0.065 121.1)
#91B004 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) | #BBA500 | 0.065 |
| Deuteranopia (no green cones) | #B8A423 | 0.066 |
| Tritanopia (no blue cones) | #9AA695 | 0.143 |
| Achromatopsia (no color) | #A4A4A4 | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91B004
#91B004
oklch(70.8% 0.17 121.5)
- #B584F9
#B584F9
oklch(70.9% 0.17 301.5)
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 #91B004, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Icky Green #8FAE22 ΔE 0.011
- Pea Green #8EAB12 ΔE 0.016
- Avocado #90B134 ΔE 0.018
- Dark Lime #84B701 ΔE 0.024
- Avocado Green #87A922 ΔE 0.027
- Pea Soup Green #94A617 ΔE 0.029
- Bright Olive #9CBB04 ΔE 0.035
- Mustard Green #A8B504 ΔE 0.035
Use #91B004 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.