#289D2F
Closest named color: Grass Green (#3F9B0B). oklch(61% 0.18 143.7), rgb(40, 157, 47).
Aa
Black text reads best on this color (5.95:1).
About this color
#289D2F is a medium-dark, vivid green. In OKLCH its lightness is 61%, its chroma 0.180 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grass Green (#3F9B0B), ΔE 0.018 away. Black text reads best on it, at 5.95:1.
| Hue family | Greens |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.180) |
| Temperature | in between |
| Nearest name | Grass Green (#3F9B0B) |
| Black text | 5.95:1 |
| White text | 3.52:1 |
Values
| HEX | #289D2F |
| RGB | rgb(40, 157, 47) |
| HSL | hsl(124, 59%, 39%) |
| OKLCH | oklch(61% 0.18 143.7) |
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 #289D2F | 3.52:1 | AA large text | Lc -67.8 | Content text, not long reading |
| Black text on #289D2F | 5.95:1 | AA | Lc 41.7 | Non-text elements, placeholder text |
| #289D2F text on white | 3.52:1 | AA large text | Lc 62.3 | Content text, not long reading |
| #289D2F text on black | 5.95:1 | AA | Lc -39.3 | 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
#F1F8F1
oklch(97.2% 0.012 145.5)
-
Step 100
100
#E0EFDF
oklch(93.7% 0.027 143.6)
-
Step 200
200
#C7E2C5
oklch(88.5% 0.049 143.3)
-
Step 300
300
#9FD09C
oklch(80.9% 0.088 143.3)
-
Step 400
400
#66B765
oklch(70.8% 0.141 143.7)
-
Step 500
500 (this color)
#289D2F
oklch(61% 0.18 143.7)
-
Step 600
600
#008C17
oklch(55.5% 0.182 143.7)
-
Step 700
700
#007612
oklch(49.1% 0.161 143.7)
-
Step 800
800
#00610D
oklch(42.7% 0.14 143.7)
-
Step 900
900
#08500F
oklch(37.6% 0.117 143.8)
-
Step 950
950
#0A2F0B
oklch(27% 0.074 143.6)
#289D2F 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) | #A08E1F | 0.130 |
| Deuteranopia (no green cones) | #93853A | 0.130 |
| Tritanopia (no blue cones) | #009987 | 0.113 |
| Achromatopsia (no color) | #888888 | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #289D2F
#289D2F
oklch(61% 0.18 143.7)
- #B556BF
#B556BF
oklch(61% 0.18 323.7)
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 #289D2F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grass Green #3F9B0B ΔE 0.018
- Grassy Green #419C03 ΔE 0.021
- Irish Green #019529 ΔE 0.028
- True Green #089404 ΔE 0.036
- Kelley Green #009337 ΔE 0.036
- Kelly Green #02AB2E ΔE 0.041
- Emerald Green #028F1E ΔE 0.046
- Mid Green #50A747 ΔE 0.048
Use #289D2F 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.