#B1D20D
Closest named color: Yellow Green (#9ACD32). oklch(81.1% 0.191 120.5), rgb(177, 210, 13).
Aa
Black text reads best on this color (12.09:1).
About this color
#B1D20D is a light, vivid yellow. In OKLCH its lightness is 81%, its chroma 0.191 and its hue 121°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Yellow Green (#9ACD32), ΔE 0.034 away. Black text reads best on it, at 12.09:1.
| Hue family | Yellows |
| Lightness | light (81%) |
| Chroma | vivid (0.191) |
| Temperature | in between |
| Nearest name | Yellow Green (#9ACD32) |
| Black text | 12.09:1 |
| White text | 1.73:1 |
Values
| HEX | #B1D20D |
| RGB | rgb(177, 210, 13) |
| HSL | hsl(70, 88%, 44%) |
| OKLCH | oklch(81.1% 0.191 120.5) |
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 #B1D20D | 1.73:1 | Fails | Lc -35.2 | Non-text elements, placeholder text |
| Black text on #B1D20D | 12.09:1 | AAA | Lc 72.6 | Content text, not long reading |
| #B1D20D text on white | 1.73:1 | Fails | Lc 31.3 | Non-text elements, placeholder text |
| #B1D20D text on black | 12.09:1 | AAA | Lc -71.5 | 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
#F3F8E6
oklch(97.1% 0.024 119.5)
-
Step 100
100
#E4F0C7
oklch(93.6% 0.055 120.7)
-
Step 200
200
#CFE493
oklch(88.5% 0.107 120.5)
-
Step 300
300 (this color)
#B1D20D
oklch(81.1% 0.191 120.5)
-
Step 400
400
#93AF00
oklch(70.7% 0.169 120.5)
-
Step 500
500
#7E9600
oklch(63.2% 0.151 120.4)
-
Step 600
600
#697E00
oklch(55.6% 0.133 120.6)
-
Step 700
700
#586A00
oklch(49.2% 0.117 120.6)
-
Step 800
800
#485700
oklch(42.9% 0.102 120.5)
-
Step 900
900
#3B4800
oklch(37.7% 0.09 120.7)
-
Step 950
950
#222B00
oklch(27.1% 0.065 121.1)
#B1D20D 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) | #E0C500 | 0.071 |
| Deuteranopia (no green cones) | #DCC52D | 0.070 |
| Tritanopia (no blue cones) | #BCC6B3 | 0.164 |
| Achromatopsia (no color) | #C4C4C4 | 0.192 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B1D20D
#B1D20D
oklch(81.1% 0.191 120.5)
- #CDB0FF
#CDB0FF
oklch(81% 0.113 300.8)
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 #B1D20D, closest first.
No curated palette has a color within ΔE 0.04 of #B1D20D.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Yellow Green #9ACD32 ΔE 0.034
- Slime Green #99CC04 ΔE 0.036
- Kiwi Green #8EE53F ΔE 0.056
- Pea #A4BF20 ΔE 0.056
- Mustard Yellow #D2BD0A ΔE 0.068
- Apple Green #76CD26 ΔE 0.069
- Bright Olive #9CBB04 ΔE 0.070
- Fresh Green #69D84F ΔE 0.071
Use #B1D20D 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.