#A1BB37
Closest named color: Pea (#A4BF20). oklch(74.8% 0.156 120.1), rgb(161, 187, 55).
Aa
Black text reads best on this color (9.67:1).
About this color
#A1BB37 is a medium-light, vivid yellow. In OKLCH its lightness is 75%, its chroma 0.156 and its hue 120°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Pea (#A4BF20), ΔE 0.018 away. Black text reads best on it, at 9.67:1.
| Hue family | Yellows |
| Lightness | medium-light (75%) |
| Chroma | vivid (0.156) |
| Temperature | in between |
| Nearest name | Pea (#A4BF20) |
| Black text | 9.67:1 |
| White text | 2.16:1 |
Values
| HEX | #A1BB37 |
| RGB | rgb(161, 187, 55) |
| HSL | hsl(72, 55%, 47%) |
| OKLCH | oklch(74.8% 0.156 120.1) |
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 #A1BB37 | 2.16:1 | Fails | Lc -47.2 | Large or bold text, headings |
| Black text on #A1BB37 | 9.67:1 | AAA | Lc 61.4 | Content text, not long reading |
| #A1BB37 text on white | 2.16:1 | Fails | Lc 42.5 | Non-text elements, placeholder text |
| #A1BB37 text on black | 9.67:1 | AAA | Lc -59.7 | 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
#E7EDD8
oklch(93.6% 0.029 119.9)
-
Step 200
200
#D4DFB7
oklch(88.5% 0.055 120)
-
Step 300
300
#B8CA82
oklch(80.8% 0.097 120)
-
Step 400
400 (this color)
#A1BB37
oklch(74.8% 0.156 120.1)
-
Step 500
500
#7E9600
oklch(63.2% 0.151 120.4)
-
Step 600
600
#6A7E00
oklch(55.7% 0.132 120.1)
-
Step 700
700
#596A00
oklch(49.3% 0.117 120.1)
-
Step 800
800
#485600
oklch(42.6% 0.101 120)
-
Step 900
900
#3C4800
oklch(37.7% 0.09 119.9)
-
Step 950
950
#232B00
oklch(27.2% 0.064 120)
#A1BB37 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) | #C7B021 | 0.056 |
| Deuteranopia (no green cones) | #C4B042 | 0.059 |
| Tritanopia (no blue cones) | #AAB1A1 | 0.133 |
| Achromatopsia (no color) | #B0B0B0 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A1BB37
#A1BB37
oklch(74.8% 0.156 120.1)
- #BD95FF
#BD95FF
oklch(74.8% 0.153 300.1)
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 #A1BB37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pea #A4BF20 ΔE 0.018
- Mustard Green #A8B504 ΔE 0.021
- Bright Olive #9CBB04 ΔE 0.022
- Light Olive Green #A4BE5C ΔE 0.031
- Avocado #90B134 ΔE 0.037
- Olive Yellow #C2B709 ΔE 0.044
- Icky Green #8FAE22 ΔE 0.045
- Dark Lime #84B701 ΔE 0.047
Use #A1BB37 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.