#129F5B
Closest named color: Jade (#1FA774). oklch(61.9% 0.15 154.6), rgb(18, 159, 91).
Aa
Black text reads best on this color (6.13:1).
About this color
#129F5B is a medium-dark, vivid green. In OKLCH its lightness is 62%, its chroma 0.150 and its hue 155°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Jade (#1FA774), ΔE 0.037 away. Black text reads best on it, at 6.13:1.
| Hue family | Greens |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.150) |
| Temperature | in between |
| Nearest name | Jade (#1FA774) |
| Black text | 6.13:1 |
| White text | 3.42:1 |
Values
| HEX | #129F5B |
| RGB | rgb(18, 159, 91) |
| HSL | hsl(151, 80%, 35%) |
| OKLCH | oklch(61.9% 0.15 154.6) |
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 #129F5B | 3.42:1 | AA large text | Lc -66.6 | Content text, not long reading |
| Black text on #129F5B | 6.13:1 | AA | Lc 42.9 | Non-text elements, placeholder text |
| #129F5B text on white | 3.42:1 | AA large text | Lc 61.2 | Content text, not long reading |
| #129F5B text on black | 6.13:1 | AA | Lc -40.5 | 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
#F1F7F2
oklch(97% 0.009 150.7)
-
Step 100
100
#DFEEE4
oklch(93.5% 0.021 156.8)
-
Step 200
200
#C5E2CD
oklch(88.6% 0.042 154)
-
Step 300
300
#9BCFAC
oklch(80.9% 0.073 155)
-
Step 400
400
#5FB67F
oklch(70.7% 0.117 154.3)
-
Step 500
500 (this color)
#129F5B
oklch(61.9% 0.15 154.6)
-
Step 600
600
#008A4D
oklch(55.6% 0.138 154.7)
-
Step 700
700
#007440
oklch(49.1% 0.122 154.8)
-
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
#052F18
oklch(27% 0.062 154.3)
#129F5B 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) | #9F9156 | 0.133 |
| Deuteranopia (no green cones) | #8F8660 | 0.130 |
| Tritanopia (no blue cones) | #009D8E | 0.075 |
| Achromatopsia (no color) | #8B8B8B | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #129F5B
#129F5B
oklch(61.9% 0.15 154.6)
- #BB5FAA
#BB5FAA
oklch(62% 0.15 334.6)
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 #129F5B, closest first.
No curated palette has a color within ΔE 0.04 of #129F5B.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jade #1FA774 ΔE 0.037
- Light Forest Green #4F9153 ΔE 0.047
- Muted Green #5FA052 ΔE 0.047
- Seaweed Green #35AD6B ΔE 0.047
- Ocean Green #3D9973 ΔE 0.048
- Kelley Green #009337 ΔE 0.049
- Mid Green #50A747 ΔE 0.049
- Jade Green #2BAF6A ΔE 0.050
Use #129F5B 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.