#B1BC31
Closest named color: Pea (#A4BF20). oklch(76.2% 0.155 114.1), rgb(177, 188, 49).
Aa
Black text reads best on this color (10.10:1).
About this color
#B1BC31 is a medium-light, vivid yellow. In OKLCH its lightness is 76%, its chroma 0.155 and its hue 114°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Pea (#A4BF20), ΔE 0.023 away. Black text reads best on it, at 10.10:1.
| Hue family | Yellows |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.155) |
| Temperature | in between |
| Nearest name | Pea (#A4BF20) |
| Black text | 10.10:1 |
| White text | 2.07:1 |
Values
| HEX | #B1BC31 |
| RGB | rgb(177, 188, 49) |
| HSL | hsl(65, 59%, 46%) |
| OKLCH | oklch(76.2% 0.155 114.1) |
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 #B1BC31 | 2.07:1 | Fails | Lc -45.0 | Large or bold text, headings |
| Black text on #B1BC31 | 10.10:1 | AAA | Lc 63.5 | Content text, not long reading |
| #B1BC31 text on white | 2.07:1 | Fails | Lc 40.5 | Non-text elements, placeholder text |
| #B1BC31 text on black | 10.10:1 | AAA | Lc -61.8 | 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
#E9EECC
oklch(93.6% 0.045 114.1)
-
Step 200
200
#D8E09E
oklch(88.5% 0.086 113.8)
-
Step 300
300 (this color)
#B1BC31
oklch(76.2% 0.155 114.1)
-
Step 400
400
#A0AA00
oklch(70.6% 0.159 113.9)
-
Step 500
500
#899200
oklch(63.1% 0.142 114.1)
-
Step 600
600
#737B00
oklch(55.7% 0.125 114.2)
-
Step 700
700
#606700
oklch(49.1% 0.111 114.3)
-
Step 800
800
#4F5400
oklch(42.7% 0.096 113.7)
-
Step 900
900
#414600
oklch(37.7% 0.085 114.3)
-
Step 950
950
#262900
oklch(26.9% 0.06 113.9)
#B1BC31 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) | #CAB313 | 0.039 |
| Deuteranopia (no green cones) | #C9B53D | 0.041 |
| Tritanopia (no blue cones) | #BDB1A2 | 0.137 |
| Achromatopsia (no color) | #B4B4B4 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B1BC31
#B1BC31
oklch(76.2% 0.155 114.1)
- #B7A0FF
#B7A0FF
oklch(76.3% 0.135 294.1)
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 #B1BC31, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pea #A4BF20 ΔE 0.023
- Olive Yellow #C2B709 ΔE 0.025
- Mustard Green #A8B504 ΔE 0.027
- Light Olive Green #A4BE5C ΔE 0.033
- Bright Olive #9CBB04 ΔE 0.036
- Muddy Yellow #BFAC05 ΔE 0.042
- Mustard #CEB301 ΔE 0.044
- Light Olive #ACBF69 ΔE 0.045
Use #B1BC31 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.