#1BB30B
Closest named color: Kelly Green (#02AB2E). oklch(66.7% 0.221 142), rgb(27, 179, 11).
Aa
Black text reads best on this color (7.49:1).
About this color
#1BB30B is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.221 and its hue 142°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Kelly Green (#02AB2E), ΔE 0.031 away. Black text reads best on it, at 7.49:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.221) |
| Temperature | in between |
| Nearest name | Kelly Green (#02AB2E) |
| Black text | 7.49:1 |
| White text | 2.80:1 |
Values
| HEX | #1BB30B |
| RGB | rgb(27, 179, 11) |
| HSL | hsl(114, 88%, 37%) |
| OKLCH | oklch(66.7% 0.221 142) |
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 #1BB30B | 2.80:1 | Fails | Lc -58.4 | Large or bold text, headings |
| Black text on #1BB30B | 7.49:1 | AAA | Lc 50.9 | Large or bold text, headings |
| #1BB30B text on white | 2.80:1 | Fails | Lc 53.2 | Large or bold text, headings |
| #1BB30B text on black | 7.49:1 | AAA | Lc -48.7 | Large or bold text, headings |
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 500.
-
Step 50
50
#F0F8EF
oklch(97.1% 0.015 142.2)
-
Step 100
100
#DFF0DC
oklch(93.7% 0.032 141)
-
Step 200
200
#C3E4BF
oklch(88.5% 0.061 142.1)
-
Step 300
300
#98D391
oklch(81% 0.109 141.9)
-
Step 400
400
#58BA4F
oklch(70.6% 0.172 142)
-
Step 500
500 (this color)
#1BB30B
oklch(66.7% 0.221 142)
-
Step 600
600
#0D8C00
oklch(55.6% 0.187 142)
-
Step 700
700
#097600
oklch(49.1% 0.165 142.1)
-
Step 800
800
#066100
oklch(42.8% 0.144 142)
-
Step 900
900
#045100
oklch(37.8% 0.127 142.1)
-
Step 950
950
#023000
oklch(26.9% 0.09 141.9)
#1BB30B 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) | #B7A100 | 0.156 |
| Deuteranopia (no green cones) | #A89629 | 0.154 |
| Tritanopia (no blue cones) | #00AD98 | 0.146 |
| Achromatopsia (no color) | #9A9A9A | 0.222 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1BB30B
#1BB30B
oklch(66.7% 0.221 142)
- #D059E2
#D059E2
oklch(66.7% 0.221 322.2)
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 #1BB30B, closest first.
No curated palette has a color within ΔE 0.04 of #1BB30B.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Kelly Green #02AB2E ΔE 0.031
- Shamrock #01B44C ΔE 0.039
- Leaf Green #5CA904 ΔE 0.043
- Leafy Green #51B73B ΔE 0.044
- Frog Green #58BC08 ΔE 0.046
- Grass #5CAC2D ΔE 0.048
- Medium Green #39AD48 ΔE 0.048
- Shamrock Green #02C14D ΔE 0.049
Use #1BB30B 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.