#B1A511
Closest named color: Muddy Yellow (#BFAC05). oklch(71% 0.147 104.2), rgb(177, 165, 17).
Aa
Black text reads best on this color (8.25:1).
About this color
#B1A511 is a medium-light, vivid yellow. In OKLCH its lightness is 71%, its chroma 0.147 and its hue 104°. Its hue sits on the warm side of the wheel. The nearest named color is Muddy Yellow (#BFAC05), ΔE 0.030 away. Black text reads best on it, at 8.25:1.
| Hue family | Yellows |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.147) |
| Temperature | warm |
| Nearest name | Muddy Yellow (#BFAC05) |
| Black text | 8.25:1 |
| White text | 2.54:1 |
Values
| HEX | #B1A511 |
| RGB | rgb(177, 165, 17) |
| HSL | hsl(56, 82%, 38%) |
| OKLCH | oklch(71% 0.147 104.2) |
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 #B1A511 | 2.54:1 | Fails | Lc -54.7 | Large or bold text, headings |
| Black text on #B1A511 | 8.25:1 | AAA | Lc 54.4 | Large or bold text, headings |
| #B1A511 text on white | 2.54:1 | Fails | Lc 49.6 | Large or bold text, headings |
| #B1A511 text on black | 8.25:1 | AAA | Lc -52.3 | 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
#DEDBB5
oklch(88.4% 0.05 103.6)
-
Step 300
300
#CAC47D
oklch(80.9% 0.092 104.1)
-
Step 400
400 (this color)
#B1A511
oklch(71% 0.147 104.2)
-
Step 500
500
#978C00
oklch(63% 0.133 104)
-
Step 600
600
#7F7600
oklch(55.6% 0.118 104.3)
-
Step 700
700
#6B6300
oklch(49.2% 0.104 104)
-
Step 800
800
#575100
oklch(42.7% 0.09 104.7)
-
Step 900
900
#494300
oklch(37.7% 0.08 103.8)
-
Step 950
950
#2B2700
oklch(26.9% 0.057 103.7)
#B1A511 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) | #B59F00 | 0.016 |
| Deuteranopia (no green cones) | #B9A522 | 0.015 |
| Tritanopia (no blue cones) | #BF998C | 0.133 |
| Achromatopsia (no color) | #A2A2A2 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B1A511
#B1A511
oklch(71% 0.147 104.2)
- #9893F9
#9893F9
oklch(71.1% 0.146 284.2)
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 #B1A511, closest first.
No curated palette has a color within ΔE 0.04 of #B1A511.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muddy Yellow #BFAC05 ΔE 0.030
- Ocher #BF9B0C ΔE 0.032
- Brown Yellow #B29705 ΔE 0.036
- Ocre #C69C04 ΔE 0.038
- Pea Soup Green #94A617 ΔE 0.042
- Yellow Ochre #CB9D06 ΔE 0.044
- Yellow Brown #B79400 ΔE 0.044
- Mustard Green #A8B504 ΔE 0.045
Use #B1A511 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.