#216D71
Closest named color: Deep Turquoise (#017374). oklch(49.1% 0.072 200.2), rgb(33, 109, 113).
Aa
White text reads best on this color (6.01:1).
About this color
#216D71 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 49%, its chroma 0.072 and its hue 200°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Turquoise (#017374), ΔE 0.019 away. White text reads best on it, at 6.01:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Deep Turquoise (#017374) |
| Black text | 3.49:1 |
| White text | 6.01:1 |
Values
| HEX | #216D71 |
| RGB | rgb(33, 109, 113) |
| HSL | hsl(183, 55%, 29%) |
| OKLCH | oklch(49.1% 0.072 200.2) |
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 #216D71 | 6.01:1 | AA | Lc -85.0 | Fine for body text |
| Black text on #216D71 | 3.49:1 | AA large text | Lc 24.3 | Dividers and decoration only |
| #216D71 text on white | 6.01:1 | AA | Lc 79.8 | Fine for body text |
| #216D71 text on black | 3.49:1 | AA large text | Lc -22.0 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3ECEC
oklch(93.6% 0.01 197)
-
Step 200
200
#CBDDDE
oklch(88.4% 0.019 200.8)
-
Step 300
300
#A7C8C9
oklch(80.9% 0.035 198.7)
-
Step 400
400
#77ACAE
oklch(70.8% 0.056 198.9)
-
Step 500
500
#50979B
oklch(63.2% 0.072 200.3)
-
Step 600
600
#308185
oklch(55.6% 0.077 199.8)
-
Step 700
700 (this color)
#216D71
oklch(49.1% 0.072 200.2)
-
Step 800
800
#1E595C
oklch(42.8% 0.06 199.9)
-
Step 900
900
#1F494B
oklch(37.7% 0.047 199.5)
-
Step 950
950
#132B2C
oklch(27% 0.03 199.1)
#216D71 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) | #656871 | 0.074 |
| Deuteranopia (no green cones) | #595F71 | 0.068 |
| Tritanopia (no blue cones) | #00716E | 0.018 |
| Achromatopsia (no color) | #636363 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #216D71
#216D71
oklch(49.1% 0.072 200.2)
- #855050
#855050
oklch(49.2% 0.072 20)
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 #216D71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Turquoise #017374 ΔE 0.019
- Dark Aqua #05696B ΔE 0.020
- Dark Aquamarine #017371 ΔE 0.020
- Deep Aqua #08787F ΔE 0.034
- Bluegreen #017A79 ΔE 0.038
- Dark Green Blue #1F6357 ΔE 0.046
- Petrol #005F6A ΔE 0.049
- Slate #516572 ΔE 0.050
Use #216D71 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.