#129C75
Closest named color: Ocean Green (#3D9973). oklch(61.6% 0.123 166.8), rgb(18, 156, 117).
Aa
Black text reads best on this color (6.03:1).
About this color
#129C75 is a medium-dark, moderately saturated green. In OKLCH its lightness is 62%, its chroma 0.123 and its hue 167°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Ocean Green (#3D9973), ΔE 0.019 away. Black text reads best on it, at 6.03:1.
| Hue family | Greens |
| Lightness | medium-dark (62%) |
| Chroma | moderately saturated (0.123) |
| Temperature | in between |
| Nearest name | Ocean Green (#3D9973) |
| Black text | 6.03:1 |
| White text | 3.47:1 |
Values
| HEX | #129C75 |
| RGB | rgb(18, 156, 117) |
| HSL | hsl(163, 79%, 34%) |
| OKLCH | oklch(61.6% 0.123 166.8) |
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 #129C75 | 3.47:1 | AA large text | Lc -67.3 | Content text, not long reading |
| Black text on #129C75 | 6.03:1 | AA | Lc 42.3 | Non-text elements, placeholder text |
| #129C75 text on white | 3.47:1 | AA large text | Lc 61.8 | Content text, not long reading |
| #129C75 text on black | 6.03:1 | AA | Lc -39.9 | 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
#F1F7F4
oklch(97.1% 0.007 164.9)
-
Step 100
100
#E0EEE7
oklch(93.7% 0.018 164.6)
-
Step 200
200
#C5E1D4
oklch(88.6% 0.035 165.9)
-
Step 300
300
#9CCEB8
oklch(81% 0.061 166.1)
-
Step 400
400
#5FB494
oklch(70.7% 0.096 167)
-
Step 500
500 (this color)
#129C75
oklch(61.6% 0.123 166.8)
-
Step 600
600
#008865
oklch(55.6% 0.114 167)
-
Step 700
700
#007254
oklch(49% 0.101 166.9)
-
Step 800
800
#005E45
oklch(42.8% 0.088 167.1)
-
Step 900
900
#004E39
oklch(37.6% 0.077 167.4)
-
Step 950
950
#052E21
oklch(26.9% 0.051 167.1)
#129C75 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) | #989073 | 0.123 |
| Deuteranopia (no green cones) | #888578 | 0.118 |
| Tritanopia (no blue cones) | #009D91 | 0.041 |
| Achromatopsia (no color) | #898989 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #129C75
#129C75
oklch(61.6% 0.123 166.8)
- #B96494
#B96494
oklch(61.6% 0.123 346.4)
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 #129C75, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean Green #3D9973 ΔE 0.019
- Viridian #1E9167 ΔE 0.033
- Jade #1FA774 ΔE 0.035
- Blue Green #0F9B8E ΔE 0.039
- Persian Green #2A9D8F ΔE 0.041
- Light Forest Green #4F9153 ΔE 0.049
- Sea #3C9992 ΔE 0.053
- Sea Green #2E8B57 ΔE 0.054
Use #129C75 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.