#B1AA1F
Closest named color: Muddy Yellow (#BFAC05). oklch(72.1% 0.146 106.4), rgb(177, 170, 31).
Aa
Black text reads best on this color (8.63:1).
About this color
#B1AA1F is a medium-light, vivid yellow. In OKLCH its lightness is 72%, its chroma 0.146 and its hue 106°. Its hue sits on the warm side of the wheel. The nearest named color is Muddy Yellow (#BFAC05), ΔE 0.022 away. Black text reads best on it, at 8.63:1.
| Hue family | Yellows |
| Lightness | medium-light (72%) |
| Chroma | vivid (0.146) |
| Temperature | warm |
| Nearest name | Muddy Yellow (#BFAC05) |
| Black text | 8.63:1 |
| White text | 2.43:1 |
Values
| HEX | #B1AA1F |
| RGB | rgb(177, 170, 31) |
| HSL | hsl(57, 70%, 41%) |
| OKLCH | oklch(72.1% 0.146 106.4) |
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 #B1AA1F | 2.43:1 | Fails | Lc -52.7 | Large or bold text, headings |
| Black text on #B1AA1F | 8.63:1 | AAA | Lc 56.3 | Large or bold text, headings |
| #B1AA1F text on white | 2.43:1 | Fails | Lc 47.7 | Large or bold text, headings |
| #B1AA1F text on black | 8.63:1 | AAA | Lc -54.3 | 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
#F6F6ED
oklch(97.1% 0.012 106.6)
-
Step 100
100
#ECEBD7
oklch(93.5% 0.027 104.6)
-
Step 200
200
#DDDCB6
oklch(88.6% 0.05 106.1)
-
Step 300
300
#C8C57E
oklch(81% 0.092 106.2)
-
Step 400
400 (this color)
#B1AA1F
oklch(72.1% 0.146 106.4)
-
Step 500
500
#948E00
oklch(63.1% 0.135 106.7)
-
Step 600
600
#7C7700
oklch(55.6% 0.119 106.8)
-
Step 700
700
#696400
oklch(49.2% 0.105 106.3)
-
Step 800
800
#565200
oklch(42.9% 0.092 106.4)
-
Step 900
900
#474400
oklch(37.7% 0.081 106.8)
-
Step 950
950
#2A2800
oklch(27% 0.058 106.8)
#B1AA1F 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) | #B9A300 | 0.020 |
| Deuteranopia (no green cones) | #BCA82C | 0.020 |
| Tritanopia (no blue cones) | #BF9E91 | 0.133 |
| Achromatopsia (no color) | #A6A6A6 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B1AA1F
#B1AA1F
oklch(72.1% 0.146 106.4)
- #9F95FC
#9F95FC
oklch(72.1% 0.147 286.5)
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 #B1AA1F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muddy Yellow #BFAC05 ΔE 0.022
- Mustard Green #A8B504 ΔE 0.034
- Ocher #BF9B0C ΔE 0.042
- Ocre #C69C04 ΔE 0.045
- Pea Soup Green #94A617 ΔE 0.045
- Avocado #90B134 ΔE 0.045
- Olive Yellow #C2B709 ΔE 0.045
- Icky Green #8FAE22 ΔE 0.048
Use #B1AA1F 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.