#217C84
Closest named color: Deep Aqua (#08787F). oklch(53.9% 0.082 203.8), rgb(33, 124, 132).
Aa
White text reads best on this color (4.90:1).
About this color
#217C84 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 54%, its chroma 0.082 and its hue 204°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Aqua (#08787F), ΔE 0.017 away. White text reads best on it, at 4.90:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 4.28:1 |
| White text | 4.90:1 |
Values
| HEX | #217C84 |
| RGB | rgb(33, 124, 132) |
| HSL | hsl(185, 60%, 32%) |
| OKLCH | oklch(53.9% 0.082 203.8) |
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 #217C84 | 4.90:1 | AA | Lc -79.1 | Fine for body text |
| Black text on #217C84 | 4.28:1 | AA large text | Lc 30.4 | Non-text elements, placeholder text |
| #217C84 text on white | 4.90:1 | AA | Lc 73.7 | Content text, not long reading |
| #217C84 text on black | 4.28:1 | AA large text | Lc -28.0 | 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 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
#CADDDF
oklch(88.4% 0.021 204.4)
-
Step 300
300
#A6C8CB
oklch(80.9% 0.037 203)
-
Step 400
400
#74ACB1
oklch(70.7% 0.059 203)
-
Step 500
500
#4B979E
oklch(63.1% 0.076 203.4)
-
Step 600
600 (this color)
#217C84
oklch(53.9% 0.082 203.8)
-
Step 700
700
#196D74
oklch(49.1% 0.076 203.4)
-
Step 800
800
#19595F
oklch(42.7% 0.063 204.1)
-
Step 900
900
#1C494D
oklch(37.6% 0.049 203.3)
-
Step 950
950
#122B2D
oklch(27% 0.031 202.3)
#217C84 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) | #727785 | 0.082 |
| Deuteranopia (no green cones) | #646C84 | 0.076 |
| Tritanopia (no blue cones) | #00817E | 0.022 |
| Achromatopsia (no color) | #717171 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #217C84
#217C84
oklch(53.9% 0.082 203.8)
- #985B57
#985B57
oklch(53.9% 0.081 24.1)
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 #217C84, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.017
- Teal #008080 ΔE 0.018
- Bluegreen #017A79 ΔE 0.022
- Ocean #017B92 ΔE 0.024
- Deep Turquoise #017374 ΔE 0.037
- Dark Aquamarine #017371 ΔE 0.040
- Sea Blue #047495 ΔE 0.043
- Dark Cyan #008B8B ΔE 0.044
Use #217C84 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.