#217781
Closest named color: Deep Aqua (#08787F). oklch(52.4% 0.08 206.4), rgb(33, 119, 129).
Aa
White text reads best on this color (5.22:1).
About this color
#217781 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 52%, its chroma 0.080 and its hue 206°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Aqua (#08787F), ΔE 0.010 away. White text reads best on it, at 5.22:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 4.02:1 |
| White text | 5.22:1 |
Values
| HEX | #217781 |
| RGB | rgb(33, 119, 129) |
| HSL | hsl(186, 59%, 32%) |
| OKLCH | oklch(52.4% 0.08 206.4) |
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 #217781 | 5.22:1 | AA | Lc -81.0 | Fine for body text |
| Black text on #217781 | 4.02:1 | AA large text | Lc 28.5 | Dividers and decoration only |
| #217781 text on white | 5.22:1 | AA | Lc 75.6 | Fine for body text |
| #217781 text on black | 4.02:1 | AA large text | Lc -26.1 | 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 600.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECED
oklch(93.6% 0.011 204.1)
-
Step 200
200
#CBDDE0
oklch(88.5% 0.02 208.8)
-
Step 300
300
#A7C8CC
oklch(81% 0.036 205.5)
-
Step 400
400
#75ABB2
oklch(70.6% 0.058 206.1)
-
Step 500
500
#4E96A0
oklch(63% 0.074 207.3)
-
Step 600
600 (this color)
#217781
oklch(52.4% 0.08 206.4)
-
Step 700
700
#1E6C76
oklch(49% 0.074 207.5)
-
Step 800
800
#1C5860
oklch(42.6% 0.061 207.6)
-
Step 900
900
#1E494E
oklch(37.7% 0.048 205.6)
-
Step 950
950
#132B2E
oklch(27.1% 0.03 206.1)
#217781 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) | #6D7282 | 0.078 |
| Deuteranopia (no green cones) | #5F6881 | 0.071 |
| Tritanopia (no blue cones) | #007C7A | 0.024 |
| Achromatopsia (no color) | #6C6C6C | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #217781
#217781
oklch(52.4% 0.08 206.4)
- #935851
#935851
oklch(52.5% 0.08 27.3)
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 #217781, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.010
- Bluegreen #017A79 ΔE 0.021
- Ocean #017B92 ΔE 0.026
- Deep Turquoise #017374 ΔE 0.027
- Teal #008080 ΔE 0.029
- Dark Aquamarine #017371 ΔE 0.030
- Sea Blue #047495 ΔE 0.037
- Metallic Blue #4F738E ΔE 0.049
Use #217781 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.