#B5A51F
Closest named color: Muddy Yellow (#BFAC05). oklch(71.4% 0.142 101.9), rgb(181, 165, 31).
Aa
Black text reads best on this color (8.36:1).
About this color
#B5A51F is a medium-light, vivid yellow. In OKLCH its lightness is 71%, its chroma 0.142 and its hue 102°. Its hue sits on the warm side of the wheel. The nearest named color is Muddy Yellow (#BFAC05), ΔE 0.026 away. Black text reads best on it, at 8.36:1.
| Hue family | Yellows |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.142) |
| Temperature | warm |
| Nearest name | Muddy Yellow (#BFAC05) |
| Black text | 8.36:1 |
| White text | 2.50:1 |
Values
| HEX | #B5A51F |
| RGB | rgb(181, 165, 31) |
| HSL | hsl(54, 71%, 42%) |
| OKLCH | oklch(71.4% 0.142 101.9) |
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 #B5A51F | 2.50:1 | Fails | Lc -54.2 | Large or bold text, headings |
| Black text on #B5A51F | 8.36:1 | AAA | Lc 54.9 | Large or bold text, headings |
| #B5A51F text on white | 2.50:1 | Fails | Lc 49.1 | Large or bold text, headings |
| #B5A51F text on black | 8.36:1 | AAA | Lc -52.9 | 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
#F7F6ED
oklch(97.1% 0.012 101.5)
-
Step 100
100
#EDEBD8
oklch(93.7% 0.025 102)
-
Step 200
200
#DFDBB6
oklch(88.5% 0.049 102.2)
-
Step 300
300
#CCC37F
oklch(80.9% 0.089 101.7)
-
Step 400
400 (this color)
#B5A51F
oklch(71.4% 0.142 101.9)
-
Step 500
500
#9A8B00
oklch(63% 0.132 101.8)
-
Step 600
600
#817500
oklch(55.6% 0.117 102.3)
-
Step 700
700
#6D6200
oklch(49.1% 0.103 101.8)
-
Step 800
800
#595000
oklch(42.7% 0.089 102)
-
Step 900
900
#4A4200
oklch(37.6% 0.079 101.6)
-
Step 950
950
#2C2700
oklch(27% 0.057 102.1)
#B5A51F 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) | #B5A000 | 0.013 |
| Deuteranopia (no green cones) | #BAA62B | 0.011 |
| Tritanopia (no blue cones) | #C3988D | 0.131 |
| Achromatopsia (no color) | #A3A3A3 | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B5A51F
#B5A51F
oklch(71.4% 0.142 101.9)
- #9596F8
#9596F8
oklch(71.3% 0.141 281.8)
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 #B5A51F, closest first.
No curated palette has a color within ΔE 0.04 of #B5A51F.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muddy Yellow #BFAC05 ΔE 0.026
- Ocher #BF9B0C ΔE 0.028
- Ocre #C69C04 ΔE 0.032
- Brown Yellow #B29705 ΔE 0.037
- Yellow Ochre #CB9D06 ΔE 0.037
- Yellow Brown #B79400 ΔE 0.043
- Dark Gold #B59410 ΔE 0.044
- Mustard Green #A8B504 ΔE 0.048
Use #B5A51F 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.