#17C8F4
Closest named color: Bright Sky Blue (#02CCFE). oklch(77.3% 0.14 221.7), rgb(23, 200, 244).
Aa
Black text reads best on this color (10.60:1).
About this color
#17C8F4 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 77%, its chroma 0.140 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Bright Sky Blue (#02CCFE), ΔE 0.016 away. Black text reads best on it, at 10.60:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.140) |
| Temperature | cool |
| Nearest name | Bright Sky Blue (#02CCFE) |
| Black text | 10.60:1 |
| White text | 1.98:1 |
Values
| HEX | #17C8F4 |
| RGB | rgb(23, 200, 244) |
| HSL | hsl(192, 91%, 52%) |
| OKLCH | oklch(77.3% 0.14 221.7) |
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 #17C8F4 | 1.98:1 | Fails | Lc -42.0 | Non-text elements, placeholder text |
| Black text on #17C8F4 | 10.60:1 | AAA | Lc 66.3 | Content text, not long reading |
| #17C8F4 text on white | 1.98:1 | Fails | Lc 37.6 | Non-text elements, placeholder text |
| #17C8F4 text on black | 10.60:1 | AAA | Lc -64.8 | Content text, not long reading |
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 300.
-
Step 50
50
#E9F9FF
oklch(97.2% 0.019 222.2)
-
Step 100
100
#CEF1FD
oklch(93.7% 0.04 220.5)
-
Step 200
200
#9FE5FE
oklch(88.4% 0.078 222.3)
-
Step 300
300 (this color)
#17C8F4
oklch(77.3% 0.14 221.7)
-
Step 400
400
#00B2DA
oklch(70.7% 0.13 221.5)
-
Step 500
500
#0098BB
oklch(63% 0.116 221.8)
-
Step 600
600
#00809E
oklch(55.6% 0.103 221.9)
-
Step 700
700
#006C85
oklch(49.2% 0.09 221.2)
-
Step 800
800
#00586E
oklch(42.7% 0.079 222.3)
-
Step 900
900
#00495C
oklch(37.6% 0.07 222.6)
-
Step 950
950
#002C38
oklch(27.2% 0.05 221.4)
#17C8F4 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) | #AEC3F6 | 0.112 |
| Deuteranopia (no green cones) | #94B0F4 | 0.099 |
| Tritanopia (no blue cones) | #00D6D6 | 0.067 |
| Achromatopsia (no color) | #B8B8B8 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17C8F4
#17C8F4
oklch(77.3% 0.14 221.7)
- #FF956C
#FF956C
oklch(77.3% 0.139 41.6)
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 #17C8F4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Sky Blue #02CCFE ΔE 0.016
- Vivid Sky Blue #4CC9F0 ΔE 0.021
- Deep Sky Blue #00BFFF ΔE 0.034
- Aqua Blue #02D8E9 ΔE 0.052
- Lightblue #7BC8F6 ΔE 0.056
- Dark Turquoise #00CED1 ΔE 0.059
- Sky #82CAFC ΔE 0.066
- Medium Turquoise #48D1CC ΔE 0.072
Use #17C8F4 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.