#218579
Closest named color: Teal (#008080). oklch(55.8% 0.09 183.1), rgb(33, 133, 121).
Aa
Black text reads best on this color (4.69:1).
About this color
#218579 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 56%, its chroma 0.090 and its hue 183°. Its hue sits on the cool side of the wheel. The nearest named color is Teal (#008080), ΔE 0.024 away. Black text reads best on it, at 4.69:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Teal (#008080) |
| Black text | 4.69:1 |
| White text | 4.47:1 |
Values
| HEX | #218579 |
| RGB | rgb(33, 133, 121) |
| HSL | hsl(173, 60%, 33%) |
| OKLCH | oklch(55.8% 0.09 183.1) |
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 #218579 | 4.47:1 | AA large text | Lc -76.2 | Fine for body text |
| Black text on #218579 | 4.69:1 | AA | Lc 33.4 | Non-text elements, placeholder text |
| #218579 text on white | 4.47:1 | AA large text | Lc 70.7 | Content text, not long reading |
| #218579 text on black | 4.69:1 | AA | Lc -31.0 | 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
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E2EDEA
oklch(93.7% 0.012 178)
-
Step 200
200
#CADEDA
oklch(88.5% 0.022 182.5)
-
Step 300
300
#A5CAC3
oklch(81% 0.041 182.5)
-
Step 400
400
#71AEA4
oklch(70.6% 0.065 183)
-
Step 500
500
#479A8E
oklch(63.1% 0.083 182.9)
-
Step 600
600 (this color)
#218579
oklch(55.8% 0.09 183.1)
-
Step 700
700
#0E7065
oklch(49.1% 0.084 182.8)
-
Step 800
800
#135B53
oklch(42.7% 0.069 183.9)
-
Step 900
900
#194B44
oklch(37.7% 0.055 182.6)
-
Step 950
950
#112C28
oklch(27% 0.034 182.9)
#218579 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) | #7E7D79 | 0.095 |
| Deuteranopia (no green cones) | #71737A | 0.091 |
| Tritanopia (no blue cones) | #008881 | 0.013 |
| Achromatopsia (no color) | #777777 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #218579
#218579
oklch(55.8% 0.09 183.1)
- #A05D6F
#A05D6F
oklch(55.9% 0.09 3.1)
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 #218579, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal #008080 ΔE 0.024
- Dark Cyan #008B8B ΔE 0.028
- Bluegreen #017A79 ΔE 0.038
- Deep Aqua #08787F ΔE 0.047
- Dusty Teal #4C9085 ΔE 0.050
- Teal Green #0A9396 ΔE 0.051
- Viridian #1E9167 ΔE 0.053
- Teal Blue #01889F ΔE 0.057
Use #218579 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.