#B3AC09
Closest named color: Muddy Yellow (#BFAC05). oklch(72.7% 0.154 106.7), rgb(179, 172, 9).
Aa
Black text reads best on this color (8.82:1).
About this color
#B3AC09 is a medium-light, vivid yellow. In OKLCH its lightness is 73%, its chroma 0.154 and its hue 107°. Its hue sits on the warm side of the wheel. The nearest named color is Muddy Yellow (#BFAC05), ΔE 0.018 away. Black text reads best on it, at 8.82:1.
| Hue family | Yellows |
| Lightness | medium-light (73%) |
| Chroma | vivid (0.154) |
| Temperature | warm |
| Nearest name | Muddy Yellow (#BFAC05) |
| Black text | 8.82:1 |
| White text | 2.38:1 |
Values
| HEX | #B3AC09 |
| RGB | rgb(179, 172, 9) |
| HSL | hsl(58, 90%, 37%) |
| OKLCH | oklch(72.7% 0.154 106.7) |
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 #B3AC09 | 2.38:1 | Fails | Lc -51.7 | Large or bold text, headings |
| Black text on #B3AC09 | 8.82:1 | AAA | Lc 57.3 | Large or bold text, headings |
| #B3AC09 text on white | 2.38:1 | Fails | Lc 46.7 | Large or bold text, headings |
| #B3AC09 text on black | 8.82:1 | AAA | Lc -55.3 | 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
#F6F6EC
oklch(97% 0.013 106.6)
-
Step 100
100
#ECEBD6
oklch(93.5% 0.028 104.7)
-
Step 200
200
#DDDCB4
oklch(88.5% 0.053 106.2)
-
Step 300
300
#C8C57A
oklch(80.9% 0.097 106.4)
-
Step 400
400 (this color)
#B3AC09
oklch(72.7% 0.154 106.7)
-
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
#686400
oklch(49.1% 0.105 107)
-
Step 800
800
#555200
oklch(42.8% 0.092 107.3)
-
Step 900
900
#474400
oklch(37.7% 0.081 106.8)
-
Step 950
950
#2A2800
oklch(27% 0.058 106.8)
#B3AC09 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) | #BCA500 | 0.021 |
| Deuteranopia (no green cones) | #BFAA21 | 0.022 |
| Tritanopia (no blue cones) | #C19F92 | 0.141 |
| Achromatopsia (no color) | #A8A8A8 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B3AC09
#B3AC09
oklch(72.7% 0.154 106.7)
- #A196FF
#A196FF
oklch(72.6% 0.15 286.8)
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 #B3AC09, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muddy Yellow #BFAC05 ΔE 0.018
- Mustard Green #A8B504 ΔE 0.028
- Olive Yellow #C2B709 ΔE 0.038
- Mustard #CEB301 ΔE 0.046
- Avocado #90B134 ΔE 0.047
- Ocher #BF9B0C ΔE 0.047
- Icky Green #8FAE22 ΔE 0.049
- Pea Soup Green #94A617 ΔE 0.049
Use #B3AC09 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.