#17A1C9
Closest named color: Turquoise Blue (#06B1C4). oklch(66% 0.12 224.5), rgb(23, 161, 201).
Aa
Black text reads best on this color (6.97:1).
About this color
#17A1C9 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.120 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.049 away. Black text reads best on it, at 6.97:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 6.97:1 |
| White text | 3.00:1 |
Values
| HEX | #17A1C9 |
| RGB | rgb(23, 161, 201) |
| HSL | hsl(193, 79%, 44%) |
| OKLCH | oklch(66% 0.12 224.5) |
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 #17A1C9 | 3.00:1 | AA large text | Lc -61.6 | Content text, not long reading |
| Black text on #17A1C9 | 6.97:1 | AA | Lc 47.8 | Large or bold text, headings |
| #17A1C9 text on white | 3.00:1 | AA large text | Lc 56.3 | Large or bold text, headings |
| #17A1C9 text on black | 6.97:1 | AA | Lc -45.5 | Large or bold text, headings |
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 500.
-
Step 50
50
#F0F7F9
oklch(97.1% 0.008 216.6)
-
Step 100
100
#DEEDF2
oklch(93.6% 0.017 219.7)
-
Step 200
200
#C3DEE9
oklch(88.4% 0.032 224.3)
-
Step 300
300
#98C9DD
oklch(80.8% 0.058 225)
-
Step 400
400
#57ADCC
oklch(70.6% 0.094 224.2)
-
Step 500
500 (this color)
#17A1C9
oklch(66% 0.12 224.5)
-
Step 600
600
#007FA1
oklch(55.5% 0.105 225)
-
Step 700
700
#006B88
oklch(49.1% 0.093 224.9)
-
Step 800
800
#005870
oklch(42.8% 0.081 224.4)
-
Step 900
900
#00495E
oklch(37.7% 0.071 225)
-
Step 950
950
#012B38
oklch(26.9% 0.05 224.1)
#17A1C9 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) | #8B9DCB | 0.093 |
| Deuteranopia (no green cones) | #758EC9 | 0.081 |
| Tritanopia (no blue cones) | #00ADAE | 0.062 |
| Achromatopsia (no color) | #959595 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17A1C9
#17A1C9
oklch(66% 0.12 224.5)
- #CF7851
#CF7851
oklch(66% 0.121 44.3)
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 #17A1C9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.049
- Cadet Blue #5F9EA0 ΔE 0.069
- Blue NCS #118AB2 ΔE 0.069
- Faded Blue #658CBB ΔE 0.069
- Greyblue #77A1B5 ΔE 0.071
- Dark Sky Blue #448EE4 ΔE 0.076
- Water Blue #0E87CC ΔE 0.077
- Chefchaouen Blue #4895EF ΔE 0.078
Use #17A1C9 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.