#018D40
Closest named color: Kelley Green (#009337). oklch(56.3% 0.154 150.1), rgb(1, 141, 64).
Aa
Black text reads best on this color (4.88:1).
About this color
#018D40 is a medium-dark, vivid green. In OKLCH its lightness is 56%, its chroma 0.154 and its hue 150°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Kelley Green (#009337), ΔE 0.023 away. Black text reads best on it, at 4.88:1.
| Hue family | Greens |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.154) |
| Temperature | in between |
| Nearest name | Kelley Green (#009337) |
| Black text | 4.88:1 |
| White text | 4.29:1 |
Values
| HEX | #018D40 |
| RGB | rgb(1, 141, 64) |
| HSL | hsl(147, 99%, 28%) |
| OKLCH | oklch(56.3% 0.154 150.1) |
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 #018D40 | 4.29:1 | AA large text | Lc -74.6 | Content text, not long reading |
| Black text on #018D40 | 4.88:1 | AA | Lc 35.0 | Non-text elements, placeholder text |
| #018D40 text on white | 4.29:1 | AA large text | Lc 69.1 | Content text, not long reading |
| #018D40 text on black | 4.88:1 | AA | Lc -32.6 | 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 600.
-
Step 50
50
#F1F7F2
oklch(97% 0.009 150.7)
-
Step 100
100
#E1EEE3
oklch(93.6% 0.02 150.1)
-
Step 200
200
#C8E1CC
oklch(88.5% 0.039 150)
-
Step 300
300
#A1CEA9
oklch(80.9% 0.07 149.9)
-
Step 400
400
#6BB47B
oklch(70.7% 0.111 149.8)
-
Step 500
500
#3BA159
oklch(63.2% 0.142 150)
-
Step 600
600 (this color)
#018D40
oklch(56.3% 0.154 150.1)
-
Step 700
700
#007534
oklch(49.2% 0.135 150.2)
-
Step 800
800
#006029
oklch(42.7% 0.118 150)
-
Step 900
900
#104F25
oklch(37.8% 0.094 149.9)
-
Step 950
950
#0D2E16
oklch(26.9% 0.059 149.7)
#018D40 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) | #8E8039 | 0.126 |
| Deuteranopia (no green cones) | #807646 | 0.125 |
| Tritanopia (no blue cones) | #008A7B | 0.086 |
| Achromatopsia (no color) | #7A7A7A | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #018D40
#018D40
oklch(56.3% 0.154 150.1)
- #A64E9F
#A64E9F
oklch(56.3% 0.154 330.5)
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 #018D40, closest first.
No curated palette has a color within ΔE 0.04 of #018D40.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Kelley Green #009337 ΔE 0.023
- Forest Green #228B22 ΔE 0.025
- Emerald Green #028F1E ΔE 0.032
- Jungle Green #048243 ΔE 0.036
- Irish Green #019529 ΔE 0.037
- Sea Green #2E8B57 ΔE 0.038
- Dark Grass Green #388004 ΔE 0.047
- Tree Green #2A7E19 ΔE 0.047
Use #018D40 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.