#17A4CF
Closest named color: Turquoise Blue (#06B1C4). oklch(67% 0.124 225.8), rgb(23, 164, 207).
Aa
Black text reads best on this color (7.24:1).
About this color
#17A4CF is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 67%, its chroma 0.124 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.045 away. Black text reads best on it, at 7.24:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 7.24:1 |
| White text | 2.89:1 |
Values
| HEX | #17A4CF |
| RGB | rgb(23, 164, 207) |
| HSL | hsl(194, 80%, 45%) |
| OKLCH | oklch(67% 0.124 225.8) |
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 #17A4CF | 2.89:1 | Fails | Lc -60.0 | Content text, not long reading |
| Black text on #17A4CF | 7.24:1 | AAA | Lc 49.3 | Large or bold text, headings |
| #17A4CF text on white | 2.89:1 | Fails | Lc 54.7 | Large or bold text, headings |
| #17A4CF text on black | 7.24:1 | AAA | Lc -47.1 | 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 400.
-
Step 50
50
#EFF7FB
oklch(97.1% 0.01 228.9)
-
Step 100
100
#DBEDF5
oklch(93.5% 0.022 226.1)
-
Step 200
200
#BCE0EF
oklch(88.6% 0.043 225)
-
Step 300
300
#89CCE7
oklch(81% 0.078 225.3)
-
Step 400
400 (this color)
#17A4CF
oklch(67% 0.124 225.8)
-
Step 500
500
#0097C1
oklch(63% 0.121 226.4)
-
Step 600
600
#007FA2
oklch(55.5% 0.106 225.7)
-
Step 700
700
#006B89
oklch(49.1% 0.094 225.7)
-
Step 800
800
#005771
oklch(42.6% 0.082 226.6)
-
Step 900
900
#00495F
oklch(37.8% 0.072 226.2)
-
Step 950
950
#002B39
oklch(26.9% 0.051 225.5)
#17A4CF 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) | #8CA1D1 | 0.092 |
| Deuteranopia (no green cones) | #7691CE | 0.080 |
| Tritanopia (no blue cones) | #00B1B2 | 0.066 |
| Achromatopsia (no color) | #989898 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17A4CF
#17A4CF
oklch(67% 0.124 225.8)
- #D37B50
#D37B50
oklch(67% 0.124 46)
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 #17A4CF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.045
- Greyblue #77A1B5 ΔE 0.072
- Cadet Blue #5F9EA0 ΔE 0.074
- Chefchaouen Blue #4895EF ΔE 0.074
- Faded Blue #658CBB ΔE 0.075
- Dark Sky Blue #448EE4 ΔE 0.077
- Light Sea Green #20B2AA ΔE 0.079
- Blue NCS #118AB2 ΔE 0.079
Use #17A4CF 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.