#218E79
Closest named color: Viridian (#1E9167). oklch(58.2% 0.1 176.3), rgb(33, 142, 121).
Aa
Black text reads best on this color (5.20:1).
About this color
#218E79 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 58%, its chroma 0.100 and its hue 176°. Its hue sits on the cool side of the wheel. The nearest named color is Viridian (#1E9167), ΔE 0.031 away. Black text reads best on it, at 5.20:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Viridian (#1E9167) |
| Black text | 5.20:1 |
| White text | 4.03:1 |
Values
| HEX | #218E79 |
| RGB | rgb(33, 142, 121) |
| HSL | hsl(168, 62%, 34%) |
| OKLCH | oklch(58.2% 0.1 176.3) |
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 #218E79 | 4.03:1 | AA large text | Lc -72.7 | Content text, not long reading |
| Black text on #218E79 | 5.20:1 | AA | Lc 36.9 | Non-text elements, placeholder text |
| #218E79 text on white | 4.03:1 | AA large text | Lc 67.2 | Content text, not long reading |
| #218E79 text on black | 5.20:1 | AA | Lc -34.5 | 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
#F1F7F5
oklch(97.1% 0.007 174.4)
-
Step 100
100
#E1EDE9
oklch(93.6% 0.014 174.2)
-
Step 200
200
#C9DFD8
oklch(88.5% 0.025 174.7)
-
Step 300
300
#A3CBC0
oklch(81% 0.045 176.5)
-
Step 400
400
#6EB09F
oklch(70.8% 0.072 175.9)
-
Step 500
500
#419C88
oklch(63.2% 0.092 176.4)
-
Step 600
600 (this color)
#218E79
oklch(58.2% 0.1 176.3)
-
Step 700
700
#00715F
oklch(49% 0.091 176.5)
-
Step 800
800
#095C4E
oklch(42.6% 0.076 177.2)
-
Step 900
900
#154C40
oklch(37.7% 0.06 175.4)
-
Step 950
950
#0F2C26
oklch(26.9% 0.037 177.8)
#218E79 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) | #888578 | 0.104 |
| Deuteranopia (no green cones) | #7A7A7B | 0.100 |
| Tritanopia (no blue cones) | #009088 | 0.022 |
| Achromatopsia (no color) | #7F7F7F | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #218E79
#218E79
oklch(58.2% 0.1 176.3)
- #A9617D
#A9617D
oklch(58.2% 0.099 355.8)
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 #218E79, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Viridian #1E9167 ΔE 0.031
- Dark Cyan #008B8B ΔE 0.032
- Dusty Teal #4C9085 ΔE 0.037
- Blue Green #0F9B8E ΔE 0.042
- Teal Green #0A9396 ΔE 0.042
- Ocean Green #3D9973 ΔE 0.042
- Sea Green #2E8B57 ΔE 0.047
- Sea #3C9992 ΔE 0.049
Use #218E79 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.