#129C59
Closest named color: Light Forest Green (#4F9153). oklch(61% 0.148 154.5), rgb(18, 156, 89).
Aa
Black text reads best on this color (5.92:1).
About this color
#129C59 is a medium-dark, vivid green. In OKLCH its lightness is 61%, its chroma 0.148 and its hue 154°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Light Forest Green (#4F9153), ΔE 0.042 away. Black text reads best on it, at 5.92:1.
| Hue family | Greens |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.148) |
| Temperature | in between |
| Nearest name | Light Forest Green (#4F9153) |
| Black text | 5.92:1 |
| White text | 3.54:1 |
Values
| HEX | #129C59 |
| RGB | rgb(18, 156, 89) |
| HSL | hsl(151, 79%, 34%) |
| OKLCH | oklch(61% 0.148 154.5) |
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 #129C59 | 3.54:1 | AA large text | Lc -67.9 | Content text, not long reading |
| Black text on #129C59 | 5.92:1 | AA | Lc 41.6 | Non-text elements, placeholder text |
| #129C59 text on white | 3.54:1 | AA large text | Lc 62.5 | Content text, not long reading |
| #129C59 text on black | 5.92:1 | 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
#F1F7F3
oklch(97.1% 0.008 157.1)
-
Step 100
100
#E0EEE4
oklch(93.6% 0.02 154.9)
-
Step 200
200
#C5E1CD
oklch(88.4% 0.04 154.4)
-
Step 300
300
#9CCFAC
oklch(80.9% 0.072 154.5)
-
Step 400
400
#60B680
oklch(70.8% 0.116 154.6)
-
Step 500
500 (this color)
#129C59
oklch(61% 0.148 154.5)
-
Step 600
600
#008A4C
oklch(55.6% 0.139 154.3)
-
Step 700
700
#00743F
oklch(49.1% 0.123 154.3)
-
Step 800
800
#005F33
oklch(42.6% 0.106 154.6)
-
Step 900
900
#004F2A
oklch(37.6% 0.093 154.9)
-
Step 950
950
#062F18
oklch(27.1% 0.062 154)
#129C59 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) | #9C8E54 | 0.131 |
| Deuteranopia (no green cones) | #8D845E | 0.128 |
| Tritanopia (no blue cones) | #009A8C | 0.075 |
| Achromatopsia (no color) | #888888 | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #129C59
#129C59
oklch(61% 0.148 154.5)
- #B75DA7
#B75DA7
oklch(61% 0.148 334.3)
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 #129C59, closest first.
No curated palette has a color within ΔE 0.04 of #129C59.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Forest Green #4F9153 ΔE 0.042
- Kelley Green #009337 ΔE 0.043
- Jade #1FA774 ΔE 0.043
- Viridian #1E9167 ΔE 0.044
- Ocean Green #3D9973 ΔE 0.047
- Fern Green #548D44 ΔE 0.051
- Sea Green #2E8B57 ΔE 0.051
- Irish Green #019529 ΔE 0.051
Use #129C59 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.