#BBB638
Closest named color: Olive Yellow (#C2B709). oklch(75.8% 0.143 107.1), rgb(187, 182, 56).
Aa
Black text reads best on this color (9.86:1).
About this color
#BBB638 is a medium-light, vivid yellow. In OKLCH its lightness is 76%, its chroma 0.143 and its hue 107°. Its hue sits on the warm side of the wheel. The nearest named color is Olive Yellow (#C2B709), ΔE 0.020 away. Black text reads best on it, at 9.86:1.
| Hue family | Yellows |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.143) |
| Temperature | warm |
| Nearest name | Olive Yellow (#C2B709) |
| Black text | 9.86:1 |
| White text | 2.12:1 |
Values
| HEX | #BBB638 |
| RGB | rgb(187, 182, 56) |
| HSL | hsl(58, 54%, 48%) |
| OKLCH | oklch(75.8% 0.143 107.1) |
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 #BBB638 | 2.12:1 | Fails | Lc -46.3 | Large or bold text, headings |
| Black text on #BBB638 | 9.86:1 | AAA | Lc 62.3 | Content text, not long reading |
| #BBB638 text on white | 2.12:1 | Fails | Lc 41.7 | Non-text elements, placeholder text |
| #BBB638 text on black | 9.86:1 | AAA | Lc -60.6 | 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 400.
-
Step 50
50
#F6F6ED
oklch(97.1% 0.012 106.6)
-
Step 100
100
#EBEBD8
oklch(93.5% 0.025 106.9)
-
Step 200
200
#DCDCB7
oklch(88.5% 0.049 107.4)
-
Step 300
300
#C7C580
oklch(80.9% 0.09 106.8)
-
Step 400
400 (this color)
#BBB638
oklch(75.8% 0.143 107.1)
-
Step 500
500
#938E00
oklch(63.1% 0.135 107.2)
-
Step 600
600
#7C7700
oklch(55.6% 0.119 106.8)
-
Step 700
700
#686400
oklch(49.1% 0.105 107)
-
Step 800
800
#555200
oklch(42.8% 0.092 107.3)
-
Step 900
900
#474400
oklch(37.7% 0.081 106.8)
-
Step 950
950
#2A2800
oklch(27% 0.058 106.8)
#BBB638 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) | #C5AF23 | 0.021 |
| Deuteranopia (no green cones) | #C8B441 | 0.022 |
| Tritanopia (no blue cones) | #C9AA9D | 0.130 |
| Achromatopsia (no color) | #B2B2B2 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BBB638
#BBB638
oklch(75.8% 0.143 107.1)
- #ABA3FF
#ABA3FF
oklch(75.8% 0.13 286.8)
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 #BBB638, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Yellow #C2B709 ΔE 0.020
- Muddy Yellow #BFAC05 ΔE 0.027
- Mustard #CEB301 ΔE 0.029
- Mustard Green #A8B504 ΔE 0.037
- Light Olive Green #A4BE5C ΔE 0.038
- Dark Yellow #D5B60A ΔE 0.039
- Light Olive #ACBF69 ΔE 0.042
- Mustard Yellow #D2BD0A ΔE 0.043
Use #BBB638 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.