#216D5D
Closest named color: Dark Aquamarine (#017371). oklch(48.4% 0.078 176), rgb(33, 109, 93).
Aa
White text reads best on this color (6.15:1).
About this color
#216D5D is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 48%, its chroma 0.078 and its hue 176°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aquamarine (#017371), ΔE 0.031 away. White text reads best on it, at 6.15:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.41:1 |
| White text | 6.15:1 |
Values
| HEX | #216D5D |
| RGB | rgb(33, 109, 93) |
| HSL | hsl(167, 54%, 28%) |
| OKLCH | oklch(48.4% 0.078 176) |
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 #216D5D | 6.15:1 | AA | Lc -85.6 | Fine for body text |
| Black text on #216D5D | 3.41:1 | AA large text | Lc 23.6 | Dividers and decoration only |
| #216D5D text on white | 6.15:1 | AA | Lc 80.4 | Fine for body text |
| #216D5D text on black | 3.41:1 | AA large text | Lc -21.4 | Dividers and decoration only |
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 700.
-
Step 50
50
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E3ECE9
oklch(93.5% 0.01 174.3)
-
Step 200
200
#CCDED8
oklch(88.5% 0.021 173.9)
-
Step 300
300
#A8C9C0
oklch(80.9% 0.038 177)
-
Step 400
400
#78AD9F
oklch(70.6% 0.06 176.2)
-
Step 500
500
#529988
oklch(63.1% 0.077 176.3)
-
Step 600
600
#328371
oklch(55.5% 0.084 175.9)
-
Step 700
700 (this color)
#216D5D
oklch(48.4% 0.078 176)
-
Step 800
800
#205A4E
oklch(42.6% 0.063 177.1)
-
Step 900
900
#214A40
oklch(37.6% 0.05 175.5)
-
Step 950
950
#142C26
oklch(27.1% 0.032 175.7)
#216D5D 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) | #69665C | 0.082 |
| Deuteranopia (no green cones) | #5E5E5E | 0.078 |
| Tritanopia (no blue cones) | #006E68 | 0.018 |
| Achromatopsia (no color) | #616161 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #216D5D
#216D5D
oklch(48.4% 0.078 176)
- #824B60
#824B60
oklch(48.4% 0.079 356.1)
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 #216D5D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aquamarine #017371 ΔE 0.031
- Dark Aqua #05696B ΔE 0.031
- Dark Green Blue #1F6357 ΔE 0.031
- Deep Turquoise #017374 ΔE 0.035
- Bluegreen #017A79 ΔE 0.049
- Deep Aqua #08787F ΔE 0.054
- Petrol #005F6A ΔE 0.059
- Pine #2B5D34 ΔE 0.066
Use #216D5D 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.