#A1B91D
Closest named color: Bright Olive (#9CBB04). oklch(74.2% 0.167 118.9), rgb(161, 185, 29).
Aa
Black text reads best on this color (9.47:1).
About this color
#A1B91D is a medium-light, vivid yellow. In OKLCH its lightness is 74%, its chroma 0.167 and its hue 119°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Bright Olive (#9CBB04), ΔE 0.012 away. Black text reads best on it, at 9.47:1.
| Hue family | Yellows |
| Lightness | medium-light (74%) |
| Chroma | vivid (0.167) |
| Temperature | in between |
| Nearest name | Bright Olive (#9CBB04) |
| Black text | 9.47:1 |
| White text | 2.21:1 |
Values
| HEX | #A1B91D |
| RGB | rgb(161, 185, 29) |
| HSL | hsl(69, 73%, 42%) |
| OKLCH | oklch(74.2% 0.167 118.9) |
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 #A1B91D | 2.21:1 | Fails | Lc -48.3 | Large or bold text, headings |
| Black text on #A1B91D | 9.47:1 | AAA | Lc 60.5 | Content text, not long reading |
| #A1B91D text on white | 2.21:1 | Fails | Lc 43.5 | Non-text elements, placeholder text |
| #A1B91D text on black | 9.47:1 | AAA | Lc -58.7 | 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
#E7EDD7
oklch(93.6% 0.03 119.4)
-
Step 200
200
#D5DFB4
oklch(88.5% 0.058 118.2)
-
Step 300
300
#B9CA7C
oklch(80.8% 0.103 118.8)
-
Step 400
400 (this color)
#A1B91D
oklch(74.2% 0.167 118.9)
-
Step 500
500
#819500
oklch(63.2% 0.148 118.8)
-
Step 600
600
#6C7D00
oklch(55.6% 0.13 118.8)
-
Step 700
700
#5A6900
oklch(49.1% 0.115 119)
-
Step 800
800
#4A5600
oklch(42.8% 0.1 118.6)
-
Step 900
900
#3D4800
oklch(37.8% 0.089 119.1)
-
Step 950
950
#232A00
oklch(26.9% 0.063 118.9)
#A1B91D 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) | #C6AE00 | 0.056 |
| Deuteranopia (no green cones) | #C3AF2F | 0.057 |
| Tritanopia (no blue cones) | #ABAE9E | 0.144 |
| Achromatopsia (no color) | #AEAEAE | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A1B91D
#A1B91D
oklch(74.2% 0.167 118.9)
- #B993FF
#B993FF
oklch(74.1% 0.155 298.8)
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 #A1B91D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Olive #9CBB04 ΔE 0.012
- Mustard Green #A8B504 ΔE 0.013
- Pea #A4BF20 ΔE 0.017
- Avocado #90B134 ΔE 0.035
- Dark Lime #84B701 ΔE 0.040
- Icky Green #8FAE22 ΔE 0.041
- Light Olive Green #A4BE5C ΔE 0.044
- Olive Yellow #C2B709 ΔE 0.045
Use #A1B91D 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.