#216E83
Closest named color: Sea Blue (#047495). oklch(50.2% 0.079 220), rgb(33, 110, 131).
Aa
White text reads best on this color (5.79:1).
About this color
#216E83 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 50%, its chroma 0.079 and its hue 220°. Its hue sits on the cool side of the wheel. The nearest named color is Sea Blue (#047495), ΔE 0.030 away. White text reads best on it, at 5.79:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 3.62:1 |
| White text | 5.79:1 |
Values
| HEX | #216E83 |
| RGB | rgb(33, 110, 131) |
| HSL | hsl(193, 60%, 32%) |
| OKLCH | oklch(50.2% 0.079 220) |
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 #216E83 | 5.79:1 | AA | Lc -83.9 | Fine for body text |
| Black text on #216E83 | 3.62:1 | AA large text | Lc 25.4 | Dividers and decoration only |
| #216E83 text on white | 5.79:1 | AA | Lc 78.7 | Fine for body text |
| #216E83 text on black | 3.62:1 | AA large text | Lc -23.1 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECEF
oklch(93.6% 0.011 217.5)
-
Step 200
200
#CBDDE3
oklch(88.6% 0.021 219.7)
-
Step 300
300
#A6C7D2
oklch(80.9% 0.039 220)
-
Step 400
400
#75AABB
oklch(70.7% 0.061 219.9)
-
Step 500
500
#4D95AA
oklch(63.2% 0.078 219.2)
-
Step 600
600
#2C7F96
oklch(55.7% 0.085 219.9)
-
Step 700
700 (this color)
#216E83
oklch(50.2% 0.079 220)
-
Step 800
800
#1B5768
oklch(42.7% 0.066 220.5)
-
Step 900
900
#1E4854
oklch(37.7% 0.051 219.3)
-
Step 950
950
#132A31
oklch(27% 0.032 219.8)
#216E83 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) | #616B84 | 0.066 |
| Deuteranopia (no green cones) | #546183 | 0.060 |
| Tritanopia (no blue cones) | #007575 | 0.038 |
| Achromatopsia (no color) | #656565 | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #216E83
#216E83
oklch(50.2% 0.079 220)
- #8A5340
#8A5340
oklch(50.1% 0.08 39.8)
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 #216E83, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Blue #047495 ΔE 0.030
- Deep Aqua #08787F ΔE 0.034
- Deep Turquoise #017374 ΔE 0.035
- Ocean Blue #03719C ΔE 0.039
- Dark Aquamarine #017371 ΔE 0.040
- Ocean #017B92 ΔE 0.040
- Peacock Blue #016795 ΔE 0.043
- Dark Aqua #05696B ΔE 0.043
Use #216E83 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.