#1FBB00
Closest named color: Frog Green (#58BC08). oklch(68.9% 0.23 141.7), rgb(31, 187, 0).
Aa
Black text reads best on this color (8.16:1).
About this color
#1FBB00 is a medium-light, vivid green. In OKLCH its lightness is 69%, its chroma 0.230 and its hue 142°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Frog Green (#58BC08), ΔE 0.032 away. Black text reads best on it, at 8.16:1.
| Hue family | Greens |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.230) |
| Temperature | in between |
| Nearest name | Frog Green (#58BC08) |
| Black text | 8.16:1 |
| White text | 2.57:1 |
Values
| HEX | #1FBB00 |
| RGB | rgb(31, 187, 0) |
| HSL | hsl(110, 100%, 37%) |
| OKLCH | oklch(68.9% 0.23 141.7) |
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 #1FBB00 | 2.57:1 | Fails | Lc -54.6 | Large or bold text, headings |
| Black text on #1FBB00 | 8.16:1 | AAA | Lc 54.5 | Large or bold text, headings |
| #1FBB00 text on white | 2.57:1 | Fails | Lc 49.6 | Large or bold text, headings |
| #1FBB00 text on black | 8.16:1 | AAA | Lc -52.4 | 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 400.
-
Step 50
50
#EFF9ED
oklch(97.1% 0.019 140.5)
-
Step 100
100
#DBF1D8
oklch(93.5% 0.041 141.9)
-
Step 200
200
#BCE7B6
oklch(88.5% 0.08 141.6)
-
Step 300
300
#89D87F
oklch(81% 0.144 141.6)
-
Step 400
400 (this color)
#1FBB00
oklch(68.9% 0.23 141.7)
-
Step 500
500
#1AA600
oklch(63.1% 0.211 141.7)
-
Step 600
600
#148C00
oklch(55.7% 0.186 141.7)
-
Step 700
700
#0F7600
oklch(49.2% 0.164 141.7)
-
Step 800
800
#0B6100
oklch(42.8% 0.143 141.7)
-
Step 900
900
#075100
oklch(37.8% 0.126 141.7)
-
Step 950
950
#033000
oklch(26.9% 0.09 141.6)
#1FBB00 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) | #C0A800 | 0.163 |
| Deuteranopia (no green cones) | #B09D28 | 0.159 |
| Tritanopia (no blue cones) | #00B59E | 0.151 |
| Achromatopsia (no color) | #A1A1A1 | 0.231 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1FBB00
#1FBB00
oklch(68.9% 0.23 141.7)
- #D95DEE
#D95DEE
oklch(68.9% 0.23 321.6)
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 #1FBB00, closest first.
No curated palette has a color within ΔE 0.04 of #1FBB00.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Frog Green #58BC08 ΔE 0.032
- Shamrock Green #02C14D ΔE 0.039
- Leafy Green #51B73B ΔE 0.043
- Shamrock #01B44C ΔE 0.050
- Lime Green #32CD32 ΔE 0.053
- Kelly Green #02AB2E ΔE 0.054
- Leaf Green #5CA904 ΔE 0.058
- Grass #5CAC2D ΔE 0.059
Use #1FBB00 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.