#B5BF3E
Closest named color: Olive Yellow (#C2B709). oklch(77.3% 0.149 113.7), rgb(181, 191, 62).
Aa
Black text reads best on this color (10.48:1).
About this color
#B5BF3E is a medium-light, vivid yellow. In OKLCH its lightness is 77%, its chroma 0.149 and its hue 114°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Olive Yellow (#C2B709), ΔE 0.027 away. Black text reads best on it, at 10.48:1.
| Hue family | Yellows |
| Lightness | medium-light (77%) |
| Chroma | vivid (0.149) |
| Temperature | in between |
| Nearest name | Olive Yellow (#C2B709) |
| Black text | 10.48:1 |
| White text | 2.00:1 |
Values
| HEX | #B5BF3E |
| RGB | rgb(181, 191, 62) |
| HSL | hsl(65, 51%, 50%) |
| OKLCH | oklch(77.3% 0.149 113.7) |
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 #B5BF3E | 2.00:1 | Fails | Lc -43.1 | Non-text elements, placeholder text |
| Black text on #B5BF3E | 10.48:1 | AAA | Lc 65.2 | Content text, not long reading |
| #B5BF3E text on white | 2.00:1 | Fails | Lc 38.7 | Non-text elements, placeholder text |
| #B5BF3E text on black | 10.48:1 | AAA | Lc -63.7 | 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
#E9EECD
oklch(93.7% 0.044 114.2)
-
Step 200
200
#D8E0A0
oklch(88.5% 0.084 113.9)
-
Step 300
300 (this color)
#B5BF3E
oklch(77.3% 0.149 113.7)
-
Step 400
400
#A1AA00
oklch(70.7% 0.158 113.5)
-
Step 500
500
#8A9200
oklch(63.2% 0.142 113.6)
-
Step 600
600
#737A00
oklch(55.5% 0.124 113.7)
-
Step 700
700
#616700
oklch(49.2% 0.11 113.7)
-
Step 800
800
#4F5400
oklch(42.7% 0.096 113.7)
-
Step 900
900
#424600
oklch(37.8% 0.084 113.4)
-
Step 950
950
#262900
oklch(26.9% 0.06 113.9)
#B5BF3E 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) | #CDB62B | 0.038 |
| Deuteranopia (no green cones) | #CCB847 | 0.040 |
| Tritanopia (no blue cones) | #C1B4A5 | 0.132 |
| Achromatopsia (no color) | #B7B7B7 | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B5BF3E
#B5BF3E
oklch(77.3% 0.149 113.7)
- #B9A5FF
#B9A5FF
oklch(77.3% 0.128 293.4)
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 #B5BF3E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Yellow #C2B709 ΔE 0.027
- Light Olive Green #A4BE5C ΔE 0.031
- Pea #A4BF20 ΔE 0.031
- Light Olive #ACBF69 ΔE 0.038
- Mustard Green #A8B504 ΔE 0.039
- Mustard Yellow #D2BD0A ΔE 0.041
- Mustard #CEB301 ΔE 0.043
- Bright Olive #9CBB04 ΔE 0.046
Use #B5BF3E 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.