#17AFE4
Closest named color: Turquoise Blue (#06B1C4). oklch(70.6% 0.136 229.5), rgb(23, 175, 228).
Aa
Black text reads best on this color (8.28:1).
About this color
#17AFE4 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 71%, its chroma 0.136 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.051 away. Black text reads best on it, at 8.28:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 8.28:1 |
| White text | 2.53:1 |
Values
| HEX | #17AFE4 |
| RGB | rgb(23, 175, 228) |
| HSL | hsl(196, 82%, 49%) |
| OKLCH | oklch(70.6% 0.136 229.5) |
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 #17AFE4 | 2.53:1 | Fails | Lc -54.2 | Large or bold text, headings |
| Black text on #17AFE4 | 8.28:1 | AAA | Lc 54.9 | Large or bold text, headings |
| #17AFE4 text on white | 2.53:1 | Fails | Lc 49.1 | Large or bold text, headings |
| #17AFE4 text on black | 8.28:1 | AAA | Lc -52.9 | 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
#EEF7FC
oklch(97.1% 0.012 231.7)
-
Step 100
100
#DAEDF7
oklch(93.5% 0.024 230.4)
-
Step 200
200
#BAE0F3
oklch(88.6% 0.048 229.6)
-
Step 300
300
#85CCED
oklch(81% 0.085 229)
-
Step 400
400 (this color)
#17AFE4
oklch(70.6% 0.136 229.5)
-
Step 500
500
#0096C6
oklch(63% 0.126 229.9)
-
Step 600
600
#007EA7
oklch(55.5% 0.111 230)
-
Step 700
700
#006A8D
oklch(49.1% 0.098 229.8)
-
Step 800
800
#005774
oklch(42.7% 0.085 229.4)
-
Step 900
900
#004861
oklch(37.6% 0.075 229.8)
-
Step 950
950
#002B3B
oklch(27% 0.053 228.8)
#17AFE4 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) | #93ACE7 | 0.094 |
| Deuteranopia (no green cones) | #7A9BE3 | 0.080 |
| Tritanopia (no blue cones) | #00BEC1 | 0.077 |
| Achromatopsia (no color) | #A3A3A3 | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17AFE4
#17AFE4
oklch(70.6% 0.136 229.5)
- #E3844D
#E3844D
oklch(70.5% 0.136 49.3)
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 #17AFE4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.051
- Deep Sky Blue #00BFFF ΔE 0.052
- Chefchaouen Blue #4895EF ΔE 0.077
- Vivid Sky Blue #4CC9F0 ΔE 0.079
- Bright Sky Blue #02CCFE ΔE 0.081
- Cornflower Blue #6495ED ΔE 0.083
- Greyblue #77A1B5 ΔE 0.085
- Dark Sky Blue #448EE4 ΔE 0.090
Use #17AFE4 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.