#289C28
Closest named color: Grass Green (#3F9B0B). oklch(60.7% 0.183 142.9), rgb(40, 156, 40).
Aa
Black text reads best on this color (5.87:1).
About this color
#289C28 is a medium-dark, vivid green. In OKLCH its lightness is 61%, its chroma 0.183 and its hue 143°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grass Green (#3F9B0B), ΔE 0.015 away. Black text reads best on it, at 5.87:1.
| Hue family | Greens |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.183) |
| Temperature | in between |
| Nearest name | Grass Green (#3F9B0B) |
| Black text | 5.87:1 |
| White text | 3.57:1 |
Values
| HEX | #289C28 |
| RGB | rgb(40, 156, 40) |
| HSL | hsl(120, 59%, 38%) |
| OKLCH | oklch(60.7% 0.183 142.9) |
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 #289C28 | 3.57:1 | AA large text | Lc -68.3 | Content text, not long reading |
| Black text on #289C28 | 5.87:1 | AA | Lc 41.3 | Non-text elements, placeholder text |
| #289C28 text on white | 3.57:1 | AA large text | Lc 62.8 | Content text, not long reading |
| #289C28 text on black | 5.87:1 | AA | Lc -38.9 | 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
#F1F8F0
oklch(97.2% 0.013 141.8)
-
Step 100
100
#E0EFDF
oklch(93.7% 0.027 143.6)
-
Step 200
200
#C7E2C4
oklch(88.5% 0.05 142.4)
-
Step 300
300
#9FD09B
oklch(80.9% 0.089 142.8)
-
Step 400
400
#66B762
oklch(70.7% 0.144 142.9)
-
Step 500
500 (this color)
#289C28
oklch(60.7% 0.183 142.9)
-
Step 600
600
#008C0A
oklch(55.5% 0.186 142.9)
-
Step 700
700
#007607
oklch(49.1% 0.165 142.9)
-
Step 800
800
#006104
oklch(42.7% 0.144 142.9)
-
Step 900
900
#09500B
oklch(37.6% 0.119 143)
-
Step 950
950
#0A2F09
oklch(26.9% 0.076 142.7)
#289C28 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) | #9F8D12 | 0.129 |
| Deuteranopia (no green cones) | #928434 | 0.130 |
| Tritanopia (no blue cones) | #009785 | 0.117 |
| Achromatopsia (no color) | #878787 | 0.184 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #289C28
#289C28
oklch(60.7% 0.183 142.9)
- #B454C1
#B454C1
oklch(60.7% 0.184 322.7)
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 #289C28, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grass Green #3F9B0B ΔE 0.015
- Grassy Green #419C03 ΔE 0.018
- Irish Green #019529 ΔE 0.026
- True Green #089404 ΔE 0.031
- Kelley Green #009337 ΔE 0.035
- Kelly Green #02AB2E ΔE 0.043
- Emerald Green #028F1E ΔE 0.043
- Forest Green #228B22 ΔE 0.051
Use #289C28 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.