#A3B81F
Closest named color: Mustard Green (#A8B504). oklch(74.1% 0.164 117.9), rgb(163, 184, 31).
Aa
Black text reads best on this color (9.43:1).
About this color
#A3B81F is a medium-light, vivid yellow. In OKLCH its lightness is 74%, its chroma 0.164 and its hue 118°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Mustard Green (#A8B504), ΔE 0.010 away. Black text reads best on it, at 9.43:1.
| Hue family | Yellows |
| Lightness | medium-light (74%) |
| Chroma | vivid (0.164) |
| Temperature | in between |
| Nearest name | Mustard Green (#A8B504) |
| Black text | 9.43:1 |
| White text | 2.22:1 |
Values
| HEX | #A3B81F |
| RGB | rgb(163, 184, 31) |
| HSL | hsl(68, 71%, 42%) |
| OKLCH | oklch(74.1% 0.164 117.9) |
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 #A3B81F | 2.22:1 | Fails | Lc -48.5 | Large or bold text, headings |
| Black text on #A3B81F | 9.43:1 | AAA | Lc 60.3 | Content text, not long reading |
| #A3B81F text on white | 2.22:1 | Fails | Lc 43.7 | Non-text elements, placeholder text |
| #A3B81F text on black | 9.43:1 | AAA | Lc -58.5 | 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
#E8EDD7
oklch(93.6% 0.03 117.4)
-
Step 200
200
#D5DFB5
oklch(88.5% 0.057 118.5)
-
Step 300
300
#BBCA7C
oklch(81% 0.103 117.6)
-
Step 400
400 (this color)
#A3B81F
oklch(74.1% 0.164 117.9)
-
Step 500
500
#839400
oklch(63.1% 0.146 117.6)
-
Step 600
600
#6D7C00
oklch(55.4% 0.129 117.8)
-
Step 700
700
#5C6900
oklch(49.2% 0.114 117.9)
-
Step 800
800
#4B5600
oklch(42.8% 0.1 117.9)
-
Step 900
900
#3E4700
oklch(37.7% 0.087 117.6)
-
Step 950
950
#242A00
oklch(27% 0.063 117.7)
#A3B81F 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) | #C5AD00 | 0.053 |
| Deuteranopia (no green cones) | #C3AE30 | 0.055 |
| Tritanopia (no blue cones) | #AEAD9D | 0.143 |
| Achromatopsia (no color) | #AEAEAE | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A3B81F
#A3B81F
oklch(74.1% 0.164 117.9)
- #B794FF
#B794FF
oklch(74.1% 0.154 297.6)
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 #A3B81F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mustard Green #A8B504 ΔE 0.010
- Bright Olive #9CBB04 ΔE 0.016
- Pea #A4BF20 ΔE 0.019
- Avocado #90B134 ΔE 0.035
- Icky Green #8FAE22 ΔE 0.040
- Light Olive Green #A4BE5C ΔE 0.042
- Dark Lime #84B701 ΔE 0.042
- Olive Yellow #C2B709 ΔE 0.043
Use #A3B81F 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.