#216F6B
Closest named color: Dark Aquamarine (#017371). oklch(49.4% 0.074 190.1), rgb(33, 111, 107).
Aa
White text reads best on this color (5.91:1).
About this color
#216F6B is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 49%, its chroma 0.074 and its hue 190°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aquamarine (#017371), ΔE 0.015 away. White text reads best on it, at 5.91:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.55:1 |
| White text | 5.91:1 |
Values
| HEX | #216F6B |
| RGB | rgb(33, 111, 107) |
| HSL | hsl(177, 54%, 28%) |
| OKLCH | oklch(49.4% 0.074 190.1) |
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 #216F6B | 5.91:1 | AA | Lc -84.5 | Fine for body text |
| Black text on #216F6B | 3.55:1 | AA large text | Lc 24.8 | Dividers and decoration only |
| #216F6B text on white | 5.91:1 | AA | Lc 79.3 | Fine for body text |
| #216F6B text on black | 3.55:1 | AA large text | Lc -22.5 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEB
oklch(93.6% 0.01 189.1)
-
Step 200
200
#CBDEDC
oklch(88.6% 0.02 189.2)
-
Step 300
300
#A7C8C6
oklch(80.8% 0.035 192)
-
Step 400
400
#76ACA8
oklch(70.6% 0.057 190.1)
-
Step 500
500
#4F9893
oklch(63.1% 0.074 189.6)
-
Step 600
600
#2F827E
oklch(55.6% 0.079 190.6)
-
Step 700
700 (this color)
#216F6B
oklch(49.4% 0.074 190.1)
-
Step 800
800
#1D5A56
oklch(42.8% 0.062 189)
-
Step 900
900
#1F4A47
oklch(37.8% 0.048 189.2)
-
Step 950
950
#132B2A
oklch(26.9% 0.03 192)
#216F6B 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) | #68696B | 0.078 |
| Deuteranopia (no green cones) | #5D606C | 0.075 |
| Tritanopia (no blue cones) | #00726E | 0.013 |
| Achromatopsia (no color) | #646464 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #216F6B
#216F6B
oklch(49.4% 0.074 190.1)
- #864F58
#864F58
oklch(49.4% 0.075 9.6)
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 #216F6B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aquamarine #017371 ΔE 0.015
- Deep Turquoise #017374 ΔE 0.017
- Dark Aqua #05696B ΔE 0.024
- Bluegreen #017A79 ΔE 0.034
- Deep Aqua #08787F ΔE 0.035
- Dark Green Blue #1F6357 ΔE 0.043
- Teal #008080 ΔE 0.053
- Petrol #005F6A ΔE 0.056
Use #216F6B 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.