#B4B528
Closest named color: Olive Yellow (#C2B709). oklch(74.9% 0.152 110), rgb(180, 181, 40).
Aa
Black text reads best on this color (9.58:1).
About this color
#B4B528 is a medium-light, vivid yellow. In OKLCH its lightness is 75%, its chroma 0.152 and its hue 110°. Its hue sits on the warm side of the wheel. The nearest named color is Olive Yellow (#C2B709), ΔE 0.022 away. Black text reads best on it, at 9.58:1.
| Hue family | Yellows |
| Lightness | medium-light (75%) |
| Chroma | vivid (0.152) |
| Temperature | warm |
| Nearest name | Olive Yellow (#C2B709) |
| Black text | 9.58:1 |
| White text | 2.19:1 |
Values
| HEX | #B4B528 |
| RGB | rgb(180, 181, 40) |
| HSL | hsl(60, 64%, 43%) |
| OKLCH | oklch(74.9% 0.152 110) |
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 #B4B528 | 2.19:1 | Fails | Lc -47.7 | Large or bold text, headings |
| Black text on #B4B528 | 9.58:1 | AAA | Lc 61.0 | Content text, not long reading |
| #B4B528 text on white | 2.19:1 | Fails | Lc 43.0 | Non-text elements, placeholder text |
| #B4B528 text on black | 9.58:1 | AAA | Lc -59.2 | 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
#EAECD7
oklch(93.6% 0.028 111.3)
-
Step 200
200
#DBDDB5
oklch(88.6% 0.053 109.8)
-
Step 300
300
#C4C67D
oklch(80.8% 0.095 109.7)
-
Step 400
400 (this color)
#B4B528
oklch(74.9% 0.152 110)
-
Step 500
500
#8F9000
oklch(63.2% 0.138 110.3)
-
Step 600
600
#787900
oklch(55.7% 0.122 110.4)
-
Step 700
700
#656500
oklch(49.1% 0.107 109.8)
-
Step 800
800
#525300
oklch(42.7% 0.094 110.6)
-
Step 900
900
#454500
oklch(37.8% 0.082 109.8)
-
Step 950
950
#282900
oklch(27.1% 0.06 111.2)
#B4B528 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) | #C4AD00 | 0.028 |
| Deuteranopia (no green cones) | #C5B135 | 0.030 |
| Tritanopia (no blue cones) | #C1A99B | 0.137 |
| Achromatopsia (no color) | #AFAFAF | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B4B528
#B4B528
oklch(74.9% 0.152 110)
- #AD9DFF
#AD9DFF
oklch(74.9% 0.139 290.1)
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 #B4B528, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Yellow #C2B709 ΔE 0.022
- Mustard Green #A8B504 ΔE 0.022
- Muddy Yellow #BFAC05 ΔE 0.025
- Pea #A4BF20 ΔE 0.035
- Mustard #CEB301 ΔE 0.037
- Light Olive Green #A4BE5C ΔE 0.039
- Bright Olive #9CBB04 ΔE 0.041
- Dark Yellow #D5B60A ΔE 0.049
Use #B4B528 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.