#B1BE3F
Closest named color: Light Olive Green (#A4BE5C). oklch(76.8% 0.149 115), rgb(177, 190, 63).
Aa
Black text reads best on this color (10.30:1).
About this color
#B1BE3F is a medium-light, vivid yellow. In OKLCH its lightness is 77%, its chroma 0.149 and its hue 115°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Light Olive Green (#A4BE5C), ΔE 0.027 away. Black text reads best on it, at 10.30:1.
| Hue family | Yellows |
| Lightness | medium-light (77%) |
| Chroma | vivid (0.149) |
| Temperature | in between |
| Nearest name | Light Olive Green (#A4BE5C) |
| Black text | 10.30:1 |
| White text | 2.03:1 |
Values
| HEX | #B1BE3F |
| RGB | rgb(177, 190, 63) |
| HSL | hsl(66, 50%, 50%) |
| OKLCH | oklch(76.8% 0.149 115) |
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 #B1BE3F | 2.03:1 | Fails | Lc -44.0 | Non-text elements, placeholder text |
| Black text on #B1BE3F | 10.30:1 | AAA | Lc 64.4 | Content text, not long reading |
| #B1BE3F text on white | 2.03:1 | Fails | Lc 39.5 | Non-text elements, placeholder text |
| #B1BE3F text on black | 10.30:1 | AAA | Lc -62.8 | 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
#E8EECD
oklch(93.6% 0.044 115.6)
-
Step 200
200
#D7E0A1
oklch(88.5% 0.083 114.7)
-
Step 300
300 (this color)
#B1BE3F
oklch(76.8% 0.149 115)
-
Step 400
400
#9EAB00
oklch(70.7% 0.16 115.1)
-
Step 500
500
#889300
oklch(63.3% 0.143 115)
-
Step 600
600
#727B00
oklch(55.6% 0.126 114.8)
-
Step 700
700
#5F6700
oklch(49% 0.111 115)
-
Step 800
800
#4E5500
oklch(42.8% 0.097 115.1)
-
Step 900
900
#414600
oklch(37.7% 0.085 114.3)
-
Step 950
950
#262A00
oklch(27.2% 0.062 115.2)
#B1BE3F 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) | #CBB52D | 0.040 |
| Deuteranopia (no green cones) | #CAB748 | 0.042 |
| Tritanopia (no blue cones) | #BCB3A4 | 0.130 |
| Achromatopsia (no color) | #B6B6B6 | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B1BE3F
#B1BE3F
oklch(76.8% 0.149 115)
- #BAA2FF
#BAA2FF
oklch(76.9% 0.132 295)
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 #B1BE3F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Olive Green #A4BE5C ΔE 0.027
- Pea #A4BF20 ΔE 0.028
- Olive Yellow #C2B709 ΔE 0.029
- Mustard Green #A8B504 ΔE 0.035
- Light Olive #ACBF69 ΔE 0.037
- Bright Olive #9CBB04 ΔE 0.042
- Tan Green #A9BE70 ΔE 0.045
- Mustard #CEB301 ΔE 0.046
Use #B1BE3F 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.