#129B66
Closest named color: Ocean Green (#3D9973). oklch(61% 0.135 159.7), rgb(18, 155, 102).
Aa
Black text reads best on this color (5.90:1).
About this color
#129B66 is a medium-dark, moderately saturated green. In OKLCH its lightness is 61%, its chroma 0.135 and its hue 160°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Ocean Green (#3D9973), ΔE 0.031 away. Black text reads best on it, at 5.90:1.
| Hue family | Greens |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.135) |
| Temperature | in between |
| Nearest name | Ocean Green (#3D9973) |
| Black text | 5.90:1 |
| White text | 3.55:1 |
Values
| HEX | #129B66 |
| RGB | rgb(18, 155, 102) |
| HSL | hsl(157, 79%, 34%) |
| OKLCH | oklch(61% 0.135 159.7) |
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 #129B66 | 3.55:1 | AA large text | Lc -68.1 | Content text, not long reading |
| Black text on #129B66 | 5.90:1 | AA | Lc 41.5 | Non-text elements, placeholder text |
| #129B66 text on white | 3.55:1 | AA large text | Lc 62.6 | Content text, not long reading |
| #129B66 text on black | 5.90:1 | AA | Lc -39.1 | 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
#E0EEE5
oklch(93.6% 0.019 157.9)
-
Step 200
200
#C5E1D1
oklch(88.5% 0.037 160.5)
-
Step 300
300
#9CCEB2
oklch(80.8% 0.066 160)
-
Step 400
400
#60B589
oklch(70.7% 0.106 159.4)
-
Step 500
500 (this color)
#129B66
oklch(61% 0.135 159.7)
-
Step 600
600
#008958
oklch(55.6% 0.127 159.5)
-
Step 700
700
#00734A
oklch(49% 0.111 160)
-
Step 800
800
#005F3C
oklch(42.8% 0.097 159.8)
-
Step 900
900
#004F31
oklch(37.7% 0.086 159.7)
-
Step 950
950
#062F1D
oklch(27.2% 0.056 159.7)
#129B66 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) | #998E63 | 0.126 |
| Deuteranopia (no green cones) | #8A836A | 0.124 |
| Tritanopia (no blue cones) | #009A8D | 0.058 |
| Achromatopsia (no color) | #888888 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #129B66
#129B66
oklch(61% 0.135 159.7)
- #B7609D
#B7609D
oklch(61.1% 0.135 339.7)
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 #129B66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean Green #3D9973 ΔE 0.031
- Viridian #1E9167 ΔE 0.031
- Jade #1FA774 ΔE 0.037
- Light Forest Green #4F9153 ΔE 0.040
- Sea Green #2E8B57 ΔE 0.046
- Fern Green #548D44 ΔE 0.053
- Muted Green #5FA052 ΔE 0.056
- Kelley Green #009337 ΔE 0.057
Use #129B66 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.