#BBCD21
Closest named color: Yellow Green (#9ACD32). oklch(80.7% 0.177 116.1), rgb(187, 205, 33).
Aa
Black text reads best on this color (11.86:1).
About this color
#BBCD21 is a light, vivid yellow. In OKLCH its lightness is 81%, its chroma 0.177 and its hue 116°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Yellow Green (#9ACD32), ΔE 0.041 away. Black text reads best on it, at 11.86:1.
| Hue family | Yellows |
| Lightness | light (81%) |
| Chroma | vivid (0.177) |
| Temperature | in between |
| Nearest name | Yellow Green (#9ACD32) |
| Black text | 11.86:1 |
| White text | 1.76:1 |
Values
| HEX | #BBCD21 |
| RGB | rgb(187, 205, 33) |
| HSL | hsl(66, 72%, 47%) |
| OKLCH | oklch(80.7% 0.177 116.1) |
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 #BBCD21 | 1.76:1 | Fails | Lc -36.3 | Non-text elements, placeholder text |
| Black text on #BBCD21 | 11.86:1 | AAA | Lc 71.5 | Content text, not long reading |
| #BBCD21 text on white | 1.76:1 | Fails | Lc 32.3 | Non-text elements, placeholder text |
| #BBCD21 text on black | 11.86:1 | AAA | Lc -70.3 | 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
#F4F8E6
oklch(97.1% 0.024 117)
-
Step 100
100
#E7EFC8
oklch(93.6% 0.052 116.8)
-
Step 200
200
#D5E296
oklch(88.5% 0.099 116.4)
-
Step 300
300 (this color)
#BBCD21
oklch(80.7% 0.177 116.1)
-
Step 400
400
#9CAC00
oklch(70.7% 0.162 116.2)
-
Step 500
500
#869300
oklch(63.1% 0.144 115.9)
-
Step 600
600
#707C00
oklch(55.7% 0.128 116.3)
-
Step 700
700
#5E6800
oklch(49.2% 0.113 116.2)
-
Step 800
800
#4D5500
oklch(42.8% 0.098 115.9)
-
Step 900
900
#404700
oklch(37.8% 0.086 116)
-
Step 950
950
#252A00
oklch(27.1% 0.062 116.5)
#BBCD21 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) | #DCC200 | 0.051 |
| Deuteranopia (no green cones) | #DAC435 | 0.052 |
| Tritanopia (no blue cones) | #C7C1AF | 0.154 |
| Achromatopsia (no color) | #C3C3C3 | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BBCD21
#BBCD21
oklch(80.7% 0.177 116.1)
- #C6B2FF
#C6B2FF
oklch(80.8% 0.109 295.8)
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 #BBCD21, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Yellow Green #9ACD32 ΔE 0.041
- Slime Green #99CC04 ΔE 0.046
- Mustard Yellow #D2BD0A ΔE 0.049
- Pea #A4BF20 ΔE 0.051
- Olive Yellow #C2B709 ΔE 0.056
- Pale Olive Green #B1D27B ΔE 0.065
- Dark Yellow #D5B60A ΔE 0.066
- Bright Olive #9CBB04 ΔE 0.067
Use #BBCD21 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.