#17A0CC
Closest named color: Turquoise Blue (#06B1C4). oklch(65.9% 0.123 227), rgb(23, 160, 204).
Aa
Black text reads best on this color (6.93:1).
About this color
#17A0CC is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.123 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.054 away. Black text reads best on it, at 6.93:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 6.93:1 |
| White text | 3.02:1 |
Values
| HEX | #17A0CC |
| RGB | rgb(23, 160, 204) |
| HSL | hsl(195, 80%, 45%) |
| OKLCH | oklch(65.9% 0.123 227) |
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 #17A0CC | 3.02:1 | AA large text | Lc -61.9 | Content text, not long reading |
| Black text on #17A0CC | 6.93:1 | AA | Lc 47.5 | Large or bold text, headings |
| #17A0CC text on white | 3.02:1 | AA large text | Lc 56.5 | Large or bold text, headings |
| #17A0CC text on black | 6.93:1 | AA | Lc -45.3 | 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
#F0F7FA
oklch(97.2% 0.008 225.1)
-
Step 100
100
#DEEDF3
oklch(93.7% 0.018 223.6)
-
Step 200
200
#C3DEEB
oklch(88.5% 0.034 228.4)
-
Step 300
300
#98C9DF
oklch(80.9% 0.06 227.3)
-
Step 400
400
#58ADCF
oklch(70.8% 0.096 226.7)
-
Step 500
500 (this color)
#17A0CC
oklch(65.9% 0.123 227)
-
Step 600
600
#007FA4
oklch(55.6% 0.108 227.1)
-
Step 700
700
#006B8A
oklch(49.2% 0.095 226.5)
-
Step 800
800
#005772
oklch(42.6% 0.083 227.6)
-
Step 900
900
#00495F
oklch(37.8% 0.072 226.2)
-
Step 950
950
#012B3A
oklch(27% 0.052 227.6)
#17A0CC 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) | #889DCE | 0.089 |
| Deuteranopia (no green cones) | #728DCB | 0.078 |
| Tritanopia (no blue cones) | #00ADAF | 0.066 |
| Achromatopsia (no color) | #949494 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17A0CC
#17A0CC
oklch(65.9% 0.123 227)
- #CE784C
#CE784C
oklch(65.8% 0.123 46.9)
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 #17A0CC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.054
- Faded Blue #658CBB ΔE 0.068
- Blue NCS #118AB2 ΔE 0.068
- Dark Sky Blue #448EE4 ΔE 0.071
- Chefchaouen Blue #4895EF ΔE 0.072
- Water Blue #0E87CC ΔE 0.073
- Cadet Blue #5F9EA0 ΔE 0.073
- Greyblue #77A1B5 ΔE 0.074
Use #17A0CC 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.