#BFB138
Closest named color: Muddy Yellow (#BFAC05). oklch(75.1% 0.138 102.6), rgb(191, 177, 56).
Aa
Black text reads best on this color (9.56:1).
About this color
#BFB138 is a medium-light, moderately saturated yellow. In OKLCH its lightness is 75%, its chroma 0.138 and its hue 103°. Its hue sits on the warm side of the wheel. The nearest named color is Muddy Yellow (#BFAC05), ΔE 0.020 away. Black text reads best on it, at 9.56:1.
| Hue family | Yellows |
| Lightness | medium-light (75%) |
| Chroma | moderately saturated (0.138) |
| Temperature | warm |
| Nearest name | Muddy Yellow (#BFAC05) |
| Black text | 9.56:1 |
| White text | 2.19:1 |
Values
| HEX | #BFB138 |
| RGB | rgb(191, 177, 56) |
| HSL | hsl(54, 55%, 48%) |
| OKLCH | oklch(75.1% 0.138 102.6) |
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 #BFB138 | 2.19:1 | Fails | Lc -47.9 | Large or bold text, headings |
| Black text on #BFB138 | 9.56:1 | AAA | Lc 60.8 | Content text, not long reading |
| #BFB138 text on white | 2.19:1 | Fails | Lc 43.1 | Non-text elements, placeholder text |
| #BFB138 text on black | 9.56:1 | AAA | Lc -59.1 | 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
#DFDBB7
oklch(88.5% 0.048 102.1)
-
Step 300
300
#CBC381
oklch(80.8% 0.086 102.2)
-
Step 400
400 (this color)
#BFB138
oklch(75.1% 0.138 102.6)
-
Step 500
500
#998C00
oklch(63.2% 0.133 102.9)
-
Step 600
600
#817500
oklch(55.6% 0.117 102.3)
-
Step 700
700
#6C6200
oklch(49% 0.103 102.5)
-
Step 800
800
#595000
oklch(42.7% 0.089 102)
-
Step 900
900
#4A4300
oklch(37.8% 0.079 102.7)
-
Step 950
950
#2C2700
oklch(27% 0.057 102.1)
#BFB138 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) | #C1AB25 | 0.016 |
| Deuteranopia (no green cones) | #C5B240 | 0.012 |
| Tritanopia (no blue cones) | #CDA599 | 0.125 |
| Achromatopsia (no color) | #AFAFAF | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BFB138
#BFB138
oklch(75.1% 0.138 102.6)
- #A2A3FF
#A2A3FF
oklch(75.1% 0.131 282.3)
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 #BFB138, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muddy Yellow #BFAC05 ΔE 0.020
- Olive Yellow #C2B709 ΔE 0.028
- Mustard #CEB301 ΔE 0.029
- Burnt Yellow #D5AB09 ΔE 0.035
- Dark Yellow #D5B60A ΔE 0.039
- Dark Khaki #BDB76B ΔE 0.043
- Mustard Green #A8B504 ΔE 0.045
- Light Olive Green #A4BE5C ΔE 0.046
Use #BFB138 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.