#1BC129
Closest named color: Shamrock Green (#02C14D). oklch(70.6% 0.225 143.4), rgb(27, 193, 41).
Aa
Black text reads best on this color (8.70:1).
About this color
#1BC129 is a medium-light, vivid green. In OKLCH its lightness is 71%, its chroma 0.225 and its hue 143°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Shamrock Green (#02C14D), ΔE 0.026 away. Black text reads best on it, at 8.70:1.
| Hue family | Greens |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.225) |
| Temperature | in between |
| Nearest name | Shamrock Green (#02C14D) |
| Black text | 8.70:1 |
| White text | 2.41:1 |
Values
| HEX | #1BC129 |
| RGB | rgb(27, 193, 41) |
| HSL | hsl(125, 75%, 43%) |
| OKLCH | oklch(70.6% 0.225 143.4) |
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 #1BC129 | 2.41:1 | Fails | Lc -51.7 | Large or bold text, headings |
| Black text on #1BC129 | 8.70:1 | AAA | Lc 57.2 | Large or bold text, headings |
| #1BC129 text on white | 2.41:1 | Fails | Lc 46.8 | Large or bold text, headings |
| #1BC129 text on black | 8.70:1 | AAA | Lc -55.3 | 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
#EEF9EE
oklch(97.1% 0.019 145.4)
-
Step 100
100
#DBF1D9
oklch(93.5% 0.04 142.9)
-
Step 200
200
#BBE7B8
oklch(88.5% 0.078 143.2)
-
Step 300
300
#86D884
oklch(80.9% 0.141 143.6)
-
Step 400
400 (this color)
#1BC129
oklch(70.6% 0.225 143.4)
-
Step 500
500
#00A719
oklch(63.2% 0.209 143.4)
-
Step 600
600
#008C13
oklch(55.5% 0.183 143.4)
-
Step 700
700
#00760E
oklch(49.1% 0.162 143.4)
-
Step 800
800
#00610A
oklch(42.7% 0.141 143.4)
-
Step 900
900
#005107
oklch(37.7% 0.124 143.4)
-
Step 950
950
#003102
oklch(27.2% 0.09 143.2)
#1BC129 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) | #C5AE00 | 0.161 |
| Deuteranopia (no green cones) | #B4A23B | 0.162 |
| Tritanopia (no blue cones) | #00BBA5 | 0.145 |
| Achromatopsia (no color) | #A7A7A7 | 0.226 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1BC129
#1BC129
oklch(70.6% 0.225 143.4)
- #E063EF
#E063EF
oklch(70.5% 0.226 323.3)
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 #1BC129, closest first.
No curated palette has a color within ΔE 0.04 of #1BC129.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Shamrock Green #02C14D ΔE 0.026
- Frog Green #58BC08 ΔE 0.029
- Lime Green #32CD32 ΔE 0.036
- Leafy Green #51B73B ΔE 0.041
- Shamrock #01B44C ΔE 0.052
- Apple #6ECB3C ΔE 0.063
- Dark Lime Green #7EBD01 ΔE 0.063
- Algae Green #21C36F ΔE 0.064
Use #1BC129 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.