#BBB728
Closest named color: Olive Yellow (#C2B709). oklch(75.9% 0.153 107.8), rgb(187, 183, 40).
Aa
Black text reads best on this color (9.91:1).
About this color
#BBB728 is a medium-light, vivid yellow. In OKLCH its lightness is 76%, its chroma 0.153 and its hue 108°. Its hue sits on the warm side of the wheel. The nearest named color is Olive Yellow (#C2B709), ΔE 0.012 away. Black text reads best on it, at 9.91:1.
| Hue family | Yellows |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.153) |
| Temperature | warm |
| Nearest name | Olive Yellow (#C2B709) |
| Black text | 9.91:1 |
| White text | 2.11:1 |
Values
| HEX | #BBB728 |
| RGB | rgb(187, 183, 40) |
| HSL | hsl(58, 65%, 45%) |
| OKLCH | oklch(75.9% 0.153 107.8) |
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 #BBB728 | 2.11:1 | Fails | Lc -46.0 | Large or bold text, headings |
| Black text on #BBB728 | 9.91:1 | AAA | Lc 62.6 | Content text, not long reading |
| #BBB728 text on white | 2.11:1 | Fails | Lc 41.4 | Non-text elements, placeholder text |
| #BBB728 text on black | 9.91:1 | AAA | Lc -60.9 | Content text, not long reading |
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 300.
-
Step 50
50
#F6F7E7
oklch(97.1% 0.021 109.7)
-
Step 100
100
#ECEDCB
oklch(93.7% 0.045 108.6)
-
Step 200
200
#DEDE9C
oklch(88.5% 0.085 108)
-
Step 300
300 (this color)
#BBB728
oklch(75.9% 0.153 107.8)
-
Step 400
400
#ABA600
oklch(70.6% 0.152 107.6)
-
Step 500
500
#928E00
oklch(63% 0.136 107.7)
-
Step 600
600
#7B7800
oklch(55.7% 0.12 108)
-
Step 700
700
#676400
oklch(49% 0.105 107.7)
-
Step 800
800
#545200
oklch(42.7% 0.092 108.1)
-
Step 900
900
#464400
oklch(37.6% 0.081 107.8)
-
Step 950
950
#292800
oklch(26.9% 0.058 108.3)
#BBB728 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) | #C7AF00 | 0.024 |
| Deuteranopia (no green cones) | #C9B435 | 0.025 |
| Tritanopia (no blue cones) | #C9AB9D | 0.138 |
| Achromatopsia (no color) | #B2B2B2 | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BBB728
#BBB728
oklch(75.9% 0.153 107.8)
- #ADA3FF
#ADA3FF
oklch(76% 0.13 287.9)
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 #BBB728, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Yellow #C2B709 ΔE 0.012
- Muddy Yellow #BFAC05 ΔE 0.027
- Mustard #CEB301 ΔE 0.028
- Mustard Green #A8B504 ΔE 0.032
- Dark Yellow #D5B60A ΔE 0.038
- Pea #A4BF20 ΔE 0.038
- Mustard Yellow #D2BD0A ΔE 0.039
- Light Olive Green #A4BE5C ΔE 0.042
Use #BBB728 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.