#218E6C
Closest named color: Viridian (#1E9167). oklch(57.9% 0.109 166.9), rgb(33, 142, 108).
Aa
Black text reads best on this color (5.15:1).
About this color
#218E6C is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.109 and its hue 167°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Viridian (#1E9167), ΔE 0.014 away. Black text reads best on it, at 5.15:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.109) |
| Temperature | in between |
| Nearest name | Viridian (#1E9167) |
| Black text | 5.15:1 |
| White text | 4.07:1 |
Values
| HEX | #218E6C |
| RGB | rgb(33, 142, 108) |
| HSL | hsl(161, 62%, 34%) |
| OKLCH | oklch(57.9% 0.109 166.9) |
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 #218E6C | 4.07:1 | AA large text | Lc -73.1 | Content text, not long reading |
| Black text on #218E6C | 5.15:1 | AA | Lc 36.5 | Non-text elements, placeholder text |
| #218E6C text on white | 4.07:1 | AA large text | Lc 67.6 | Content text, not long reading |
| #218E6C text on black | 5.15:1 | AA | Lc -34.1 | 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
#F2F7F4
oklch(97.2% 0.007 160.1)
-
Step 100
100
#E1EDE8
oklch(93.6% 0.014 169.2)
-
Step 200
200
#C9DFD5
oklch(88.4% 0.027 166.7)
-
Step 300
300
#A3CBBA
oklch(80.8% 0.049 167.4)
-
Step 400
400
#6FB196
oklch(70.8% 0.079 166.4)
-
Step 500
500
#429D7C
oklch(63.2% 0.101 166.4)
-
Step 600
600 (this color)
#218E6C
oklch(57.9% 0.109 166.9)
-
Step 700
700
#007254
oklch(49% 0.101 166.9)
-
Step 800
800
#0A5D45
oklch(42.6% 0.084 167.1)
-
Step 900
900
#164C3A
oklch(37.6% 0.065 167.2)
-
Step 950
950
#0F2D22
oklch(27% 0.042 166.6)
#218E6C 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) | #8B846A | 0.109 |
| Deuteranopia (no green cones) | #7D7A6E | 0.105 |
| Tritanopia (no blue cones) | #008F85 | 0.037 |
| Achromatopsia (no color) | #7E7E7E | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #218E6C
#218E6C
oklch(57.9% 0.109 166.9)
- #A85E86
#A85E86
oklch(57.9% 0.108 347.4)
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 #218E6C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Viridian #1E9167 ΔE 0.014
- Sea Green #2E8B57 ΔE 0.028
- Ocean Green #3D9973 ΔE 0.039
- Light Forest Green #4F9153 ΔE 0.046
- Dark Sage #598556 ΔE 0.047
- Dark Cyan #008B8B ΔE 0.051
- Dusty Teal #4C9085 ΔE 0.051
- Blue Green #0F9B8E ΔE 0.053
Use #218E6C 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.