#216F6D
Closest named color: Dark Aquamarine (#017371). oklch(49.5% 0.074 192.6), rgb(33, 111, 109).
Aa
White text reads best on this color (5.90:1).
About this color
#216F6D is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 50%, its chroma 0.074 and its hue 193°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aquamarine (#017371), ΔE 0.014 away. White text reads best on it, at 5.90:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.55:1 |
| White text | 5.90:1 |
Values
| HEX | #216F6D |
| RGB | rgb(33, 111, 109) |
| HSL | hsl(178, 54%, 28%) |
| OKLCH | oklch(49.5% 0.074 192.6) |
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 #216F6D | 5.90:1 | AA | Lc -84.5 | Fine for body text |
| Black text on #216F6D | 3.55:1 | AA large text | Lc 24.8 | Dividers and decoration only |
| #216F6D text on white | 5.90:1 | AA | Lc 79.2 | Fine for body text |
| #216F6D text on black | 3.55:1 | AA large text | Lc -22.6 | 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
#E2ECEC
oklch(93.6% 0.011 197)
-
Step 200
200
#CBDEDC
oklch(88.6% 0.02 189.2)
-
Step 300
300
#A7C8C7
oklch(80.8% 0.035 194.2)
-
Step 400
400
#76ACAA
oklch(70.6% 0.057 193)
-
Step 500
500
#4F9895
oklch(63.2% 0.073 192)
-
Step 600
600
#2E8280
oklch(55.6% 0.079 192.9)
-
Step 700
700 (this color)
#216F6D
oklch(49.5% 0.074 192.6)
-
Step 800
800
#1D5958
oklch(42.6% 0.061 193.6)
-
Step 900
900
#1F4A48
oklch(37.8% 0.048 191.2)
-
Step 950
950
#132B2A
oklch(26.9% 0.03 192)
#216F6D 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) | #68696D | 0.078 |
| Deuteranopia (no green cones) | #5C616E | 0.072 |
| Tritanopia (no blue cones) | #00726E | 0.013 |
| Achromatopsia (no color) | #646464 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #216F6D
#216F6D
oklch(49.5% 0.074 192.6)
- #865056
#865056
oklch(49.5% 0.073 12.9)
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 #216F6D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aquamarine #017371 ΔE 0.014
- Deep Turquoise #017374 ΔE 0.015
- Dark Aqua #05696B ΔE 0.024
- Deep Aqua #08787F ΔE 0.033
- Bluegreen #017A79 ΔE 0.033
- Dark Green Blue #1F6357 ΔE 0.045
- Teal #008080 ΔE 0.052
- Petrol #005F6A ΔE 0.055
Use #216F6D 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.