#17787D
Closest named color: Deep Aqua (#08787F). oklch(52.3% 0.083 200.3), rgb(23, 120, 125).
Aa
White text reads best on this color (5.22:1).
About this color
#17787D is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 52%, its chroma 0.083 and its hue 200°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Aqua (#08787F), ΔE 0.005 away. White text reads best on it, at 5.22:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 4.01:1 |
| White text | 5.22:1 |
Values
| HEX | #17787D |
| RGB | rgb(23, 120, 125) |
| HSL | hsl(183, 69%, 29%) |
| OKLCH | oklch(52.3% 0.083 200.3) |
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 #17787D | 5.22:1 | AA | Lc -80.9 | Fine for body text |
| Black text on #17787D | 4.01:1 | AA large text | Lc 28.5 | Dividers and decoration only |
| #17787D text on white | 5.22:1 | AA | Lc 75.5 | Fine for body text |
| #17787D text on black | 4.01:1 | AA large text | Lc -26.2 | 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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E1ECED
oklch(93.5% 0.012 203.5)
-
Step 200
200
#C9DEDF
oklch(88.5% 0.022 200.2)
-
Step 300
300
#A3C9CB
oklch(80.9% 0.04 200.3)
-
Step 400
400
#6FADB1
oklch(70.7% 0.064 201)
-
Step 500
500
#42989D
oklch(62.9% 0.082 200.5)
-
Step 600
600
#178388
oklch(55.7% 0.09 199.9)
-
Step 700
700 (this color)
#17787D
oklch(52.3% 0.083 200.3)
-
Step 800
800
#0C5A5E
oklch(42.7% 0.069 200.4)
-
Step 900
900
#164A4D
oklch(37.7% 0.054 200.6)
-
Step 950
950
#0F2B2D
oklch(26.9% 0.034 201.6)
#17787D 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) | #6E727D | 0.084 |
| Deuteranopia (no green cones) | #60687D | 0.078 |
| Tritanopia (no blue cones) | #007D79 | 0.019 |
| Achromatopsia (no color) | #6C6C6C | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17787D
#17787D
oklch(52.3% 0.083 200.3)
- #945555
#945555
oklch(52.2% 0.084 20.3)
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 #17787D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.005
- Bluegreen #017A79 ΔE 0.012
- Deep Turquoise #017374 ΔE 0.021
- Teal #008080 ΔE 0.024
- Dark Aquamarine #017371 ΔE 0.024
- Ocean #017B92 ΔE 0.032
- Sea Blue #047495 ΔE 0.044
- Dark Aqua #05696B ΔE 0.051
Use #17787D 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.