#B4BC40
Closest named color: Olive Yellow (#C2B709). oklch(76.6% 0.145 112.9), rgb(180, 188, 64).
Aa
Black text reads best on this color (10.20:1).
About this color
#B4BC40 is a medium-light, vivid yellow. In OKLCH its lightness is 77%, its chroma 0.145 and its hue 113°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Olive Yellow (#C2B709), ΔE 0.026 away. Black text reads best on it, at 10.20:1.
| Hue family | Yellows |
| Lightness | medium-light (77%) |
| Chroma | vivid (0.145) |
| Temperature | in between |
| Nearest name | Olive Yellow (#C2B709) |
| Black text | 10.20:1 |
| White text | 2.05:1 |
Values
| HEX | #B4BC40 |
| RGB | rgb(180, 188, 64) |
| HSL | hsl(64, 49%, 49%) |
| OKLCH | oklch(76.6% 0.145 112.9) |
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 #B4BC40 | 2.05:1 | Fails | Lc -44.6 | Non-text elements, placeholder text |
| Black text on #B4BC40 | 10.20:1 | AAA | Lc 63.9 | Content text, not long reading |
| #B4BC40 text on white | 2.05:1 | Fails | Lc 40.0 | Non-text elements, placeholder text |
| #B4BC40 text on black | 10.20:1 | AAA | Lc -62.3 | 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
#F5F7E8
oklch(97.1% 0.02 112.9)
-
Step 100
100
#E9EDCE
oklch(93.5% 0.041 113.2)
-
Step 200
200
#D9DFA2
oklch(88.4% 0.08 112.6)
-
Step 300
300 (this color)
#B4BC40
oklch(76.6% 0.145 112.9)
-
Step 400
400
#A2AA00
oklch(70.8% 0.158 113.1)
-
Step 500
500
#8B9100
oklch(63% 0.14 112.7)
-
Step 600
600
#747A00
oklch(55.6% 0.124 113.2)
-
Step 700
700
#626600
oklch(49% 0.109 112.4)
-
Step 800
800
#505400
oklch(42.8% 0.095 112.9)
-
Step 900
900
#424600
oklch(37.8% 0.084 113.4)
-
Step 950
950
#272900
oklch(27% 0.06 112.6)
#B4BC40 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) | #CAB32F | 0.036 |
| Deuteranopia (no green cones) | #CAB649 | 0.037 |
| Tritanopia (no blue cones) | #C0B1A3 | 0.129 |
| Achromatopsia (no color) | #B5B5B5 | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B4BC40
#B4BC40
oklch(76.6% 0.145 112.9)
- #B6A2FF
#B6A2FF
oklch(76.5% 0.132 292.9)
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 #B4BC40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Yellow #C2B709 ΔE 0.026
- Light Olive Green #A4BE5C ΔE 0.027
- Pea #A4BF20 ΔE 0.033
- Light Olive #ACBF69 ΔE 0.035
- Mustard Green #A8B504 ΔE 0.036
- Mustard #CEB301 ΔE 0.041
- Muddy Yellow #BFAC05 ΔE 0.042
- Tan Green #A9BE70 ΔE 0.043
Use #B4BC40 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.