#129D3A
Closest named color: Irish Green (#019529). oklch(60.8% 0.177 146.8), rgb(18, 157, 58).
Aa
Black text reads best on this color (5.90:1).
About this color
#129D3A is a medium-dark, vivid green. In OKLCH its lightness is 61%, its chroma 0.177 and its hue 147°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Irish Green (#019529), ΔE 0.026 away. Black text reads best on it, at 5.90:1.
| Hue family | Greens |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.177) |
| Temperature | in between |
| Nearest name | Irish Green (#019529) |
| Black text | 5.90:1 |
| White text | 3.55:1 |
Values
| HEX | #129D3A |
| RGB | rgb(18, 157, 58) |
| HSL | hsl(137, 79%, 34%) |
| OKLCH | oklch(60.8% 0.177 146.8) |
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 #129D3A | 3.55:1 | AA large text | Lc -68.0 | Content text, not long reading |
| Black text on #129D3A | 5.90:1 | AA | Lc 41.6 | Non-text elements, placeholder text |
| #129D3A text on white | 3.55:1 | AA large text | Lc 62.5 | Content text, not long reading |
| #129D3A text on black | 5.90:1 | AA | Lc -39.2 | Non-text elements, placeholder text |
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
#F1F8F1
oklch(97.2% 0.012 145.5)
-
Step 100
100
#E0EFE0
oklch(93.7% 0.026 145.4)
-
Step 200
200
#C5E2C7
oklch(88.4% 0.048 147.1)
-
Step 300
300
#9CD0A0
oklch(80.9% 0.086 146.7)
-
Step 400
400
#60B76B
oklch(70.6% 0.138 146.7)
-
Step 500
500 (this color)
#129D3A
oklch(60.8% 0.177 146.8)
-
Step 600
600
#008B30
oklch(55.5% 0.165 146.9)
-
Step 700
700
#007527
oklch(49% 0.146 146.9)
-
Step 800
800
#00601E
oklch(42.6% 0.127 146.7)
-
Step 900
900
#005018
oklch(37.6% 0.112 146.9)
-
Step 950
950
#062F0F
oklch(26.9% 0.072 147)
#129D3A 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) | #9F8E2F | 0.136 |
| Deuteranopia (no green cones) | #918443 | 0.136 |
| Tritanopia (no blue cones) | #009988 | 0.106 |
| Achromatopsia (no color) | #888888 | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #129D3A
#129D3A
oklch(60.8% 0.177 146.8)
- #B755B9
#B755B9
oklch(60.8% 0.177 326.7)
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 #129D3A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Irish Green #019529 ΔE 0.026
- Grass Green #3F9B0B ΔE 0.028
- Kelley Green #009337 ΔE 0.031
- Grassy Green #419C03 ΔE 0.031
- True Green #089404 ΔE 0.038
- Emerald Green #028F1E ΔE 0.044
- Kelly Green #02AB2E ΔE 0.045
- Mid Green #50A747 ΔE 0.051
Use #129D3A 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.