#BBB131
Closest named color: Muddy Yellow (#BFAC05). oklch(74.7% 0.142 104.8), rgb(187, 177, 49).
Aa
Black text reads best on this color (9.44:1).
About this color
#BBB131 is a medium-light, vivid yellow. In OKLCH its lightness is 75%, its chroma 0.142 and its hue 105°. Its hue sits on the warm side of the wheel. The nearest named color is Muddy Yellow (#BFAC05), ΔE 0.016 away. Black text reads best on it, at 9.44:1.
| Hue family | Yellows |
| Lightness | medium-light (75%) |
| Chroma | vivid (0.142) |
| Temperature | warm |
| Nearest name | Muddy Yellow (#BFAC05) |
| Black text | 9.44:1 |
| White text | 2.22:1 |
Values
| HEX | #BBB131 |
| RGB | rgb(187, 177, 49) |
| HSL | hsl(56, 58%, 46%) |
| OKLCH | oklch(74.7% 0.142 104.8) |
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 #BBB131 | 2.22:1 | Fails | Lc -48.4 | Large or bold text, headings |
| Black text on #BBB131 | 9.44:1 | AAA | Lc 60.3 | Content text, not long reading |
| #BBB131 text on white | 2.22:1 | Fails | Lc 43.7 | Non-text elements, placeholder text |
| #BBB131 text on black | 9.44:1 | AAA | Lc -58.5 | 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
#ECEBD8
oklch(93.6% 0.025 104.4)
-
Step 200
200
#DEDCB6
oklch(88.6% 0.05 104.9)
-
Step 300
300
#C9C480
oklch(80.9% 0.088 104.6)
-
Step 400
400 (this color)
#BBB131
oklch(74.7% 0.142 104.8)
-
Step 500
500
#968D00
oklch(63.1% 0.134 105.1)
-
Step 600
600
#7E7600
oklch(55.5% 0.118 104.9)
-
Step 700
700
#6A6300
oklch(49.1% 0.104 104.8)
-
Step 800
800
#575100
oklch(42.7% 0.09 104.7)
-
Step 900
900
#484300
oklch(37.6% 0.08 104.8)
-
Step 950
950
#2B2800
oklch(27.1% 0.058 105.3)
#BBB131 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) | #C1AB18 | 0.017 |
| Deuteranopia (no green cones) | #C4B03A | 0.016 |
| Tritanopia (no blue cones) | #C9A598 | 0.129 |
| Achromatopsia (no color) | #AEAEAE | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BBB131
#BBB131
oklch(74.7% 0.142 104.8)
- #A4A0FF
#A4A0FF
oklch(74.7% 0.135 284.5)
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 #BBB131, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muddy Yellow #BFAC05 ΔE 0.016
- Olive Yellow #C2B709 ΔE 0.026
- Mustard #CEB301 ΔE 0.031
- Mustard Green #A8B504 ΔE 0.037
- Burnt Yellow #D5AB09 ΔE 0.039
- Dark Yellow #D5B60A ΔE 0.043
- Light Olive Green #A4BE5C ΔE 0.045
- Dark Khaki #BDB76B ΔE 0.049
Use #BBB131 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.