#218A4F
Closest named color: Sea Green (#2E8B57). oklch(56.1% 0.13 153.5), rgb(33, 138, 79).
Aa
Black text reads best on this color (4.81:1).
About this color
#218A4F is a medium-dark, moderately saturated green. In OKLCH its lightness is 56%, its chroma 0.130 and its hue 153°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.014 away. Black text reads best on it, at 4.81:1.
| Hue family | Greens |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.130) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.81:1 |
| White text | 4.36:1 |
Values
| HEX | #218A4F |
| RGB | rgb(33, 138, 79) |
| HSL | hsl(146, 61%, 34%) |
| OKLCH | oklch(56.1% 0.13 153.5) |
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 #218A4F | 4.36:1 | AA large text | Lc -75.3 | Fine for body text |
| Black text on #218A4F | 4.81:1 | AA | Lc 34.3 | Non-text elements, placeholder text |
| #218A4F text on white | 4.36:1 | AA large text | Lc 69.8 | Content text, not long reading |
| #218A4F text on black | 4.81:1 | AA | Lc -31.8 | 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
#F2F7F3
oklch(97.1% 0.007 151.9)
-
Step 100
100
#E2EDE5
oklch(93.6% 0.016 154.5)
-
Step 200
200
#CAE0CF
oklch(88.6% 0.033 152.4)
-
Step 300
300
#A4CCAF
oklch(80.8% 0.059 153.5)
-
Step 400
400
#71B285
oklch(70.7% 0.094 153.2)
-
Step 500
500
#469E67
oklch(63.1% 0.119 153.7)
-
Step 600
600 (this color)
#218A4F
oklch(56.1% 0.13 153.5)
-
Step 700
700
#0C743E
oklch(49.2% 0.122 153.2)
-
Step 800
800
#125E34
oklch(42.6% 0.099 153.6)
-
Step 900
900
#194D2D
oklch(37.6% 0.078 153.3)
-
Step 950
950
#102D1B
oklch(26.9% 0.049 154.2)
#218A4F 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) | #8A7E4B | 0.113 |
| Deuteranopia (no green cones) | #7D7553 | 0.111 |
| Tritanopia (no blue cones) | #00887B | 0.066 |
| Achromatopsia (no color) | #797979 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #218A4F
#218A4F
oklch(56.1% 0.13 153.5)
- #A15495
#A15495
oklch(56.1% 0.131 333.3)
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 #218A4F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.014
- Jungle Green #048243 ΔE 0.030
- Viridian #1E9167 ΔE 0.034
- Fern Green #548D44 ΔE 0.041
- Light Forest Green #4F9153 ΔE 0.043
- Kelley Green #009337 ΔE 0.046
- Forest Green #228B22 ΔE 0.048
- Dark Sage #598556 ΔE 0.050
Use #218A4F 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.