#218A3F
Closest named color: Forest Green (#228B22). oklch(55.8% 0.145 148.3), rgb(33, 138, 63).
Aa
Black text reads best on this color (4.77:1).
About this color
#218A3F is a medium-dark, vivid green. In OKLCH its lightness is 56%, its chroma 0.145 and its hue 148°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Forest Green (#228B22), ΔE 0.028 away. Black text reads best on it, at 4.77:1.
| Hue family | Greens |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.145) |
| Temperature | in between |
| Nearest name | Forest Green (#228B22) |
| Black text | 4.77:1 |
| White text | 4.40:1 |
Values
| HEX | #218A3F |
| RGB | rgb(33, 138, 63) |
| HSL | hsl(137, 61%, 34%) |
| OKLCH | oklch(55.8% 0.145 148.3) |
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 #218A3F | 4.40:1 | AA large text | Lc -75.6 | Fine for body text |
| Black text on #218A3F | 4.77:1 | AA | Lc 34.0 | Non-text elements, placeholder text |
| #218A3F text on white | 4.40:1 | AA large text | Lc 70.1 | Content text, not long reading |
| #218A3F text on black | 4.77:1 | AA | Lc -31.6 | 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
#F2F7F2
oklch(97.1% 0.008 145.5)
-
Step 100
100
#E2EEE3
oklch(93.7% 0.019 147.8)
-
Step 200
200
#CAE0CC
oklch(88.5% 0.036 147.9)
-
Step 300
300
#A4CDA9
oklch(80.9% 0.066 148.3)
-
Step 400
400
#71B37C
oklch(70.8% 0.105 148.5)
-
Step 500
500
#479F59
oklch(63.1% 0.134 148.2)
-
Step 600
600 (this color)
#218A3F
oklch(55.8% 0.145 148.3)
-
Step 700
700
#0E7430
oklch(49% 0.135 148.4)
-
Step 800
800
#135F29
oklch(42.8% 0.112 148.4)
-
Step 900
900
#194E26
oklch(37.8% 0.087 148.6)
-
Step 950
950
#112E16
oklch(27.1% 0.056 147.5)
#218A3F 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) | #8B7D38 | 0.116 |
| Deuteranopia (no green cones) | #7F7545 | 0.115 |
| Tritanopia (no blue cones) | #008779 | 0.084 |
| Achromatopsia (no color) | #787878 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #218A3F
#218A3F
oklch(55.8% 0.145 148.3)
- #A0509E
#A0509E
oklch(55.8% 0.146 328.2)
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 #218A3F, closest first.
No curated palette has a color within ΔE 0.04 of #218A3F.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Forest Green #228B22 ΔE 0.028
- Jungle Green #048243 ΔE 0.029
- Kelley Green #009337 ΔE 0.031
- Sea Green #2E8B57 ΔE 0.032
- Emerald Green #028F1E ΔE 0.039
- Dark Grass Green #388004 ΔE 0.042
- Tree Green #2A7E19 ΔE 0.042
- Fern Green #548D44 ΔE 0.043
Use #218A3F 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.