#17A7EF
Closest named color: Chefchaouen Blue (#4895EF). oklch(69.3% 0.151 238.9), rgb(23, 167, 239).
Aa
Black text reads best on this color (7.81:1).
About this color
#17A7EF is a medium-light, vivid blue. In OKLCH its lightness is 69%, its chroma 0.151 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.050 away. Black text reads best on it, at 7.81:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.151) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.81:1 |
| White text | 2.68:1 |
Values
| HEX | #17A7EF |
| RGB | rgb(23, 167, 239) |
| HSL | hsl(200, 87%, 51%) |
| OKLCH | oklch(69.3% 0.151 238.9) |
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 #17A7EF | 2.68:1 | Fails | Lc -56.8 | Large or bold text, headings |
| Black text on #17A7EF | 7.81:1 | AAA | Lc 52.4 | Large or bold text, headings |
| #17A7EF text on white | 2.68:1 | Fails | Lc 51.6 | Large or bold text, headings |
| #17A7EF text on black | 7.81:1 | AAA | Lc -50.3 | 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 400.
-
Step 50
50
#EEF7FD
oklch(97.1% 0.013 236.6)
-
Step 100
100
#DAEDFB
oklch(93.6% 0.028 239.7)
-
Step 200
200
#BADFF9
oklch(88.6% 0.053 238.8)
-
Step 300
300
#85C9F7
oklch(80.8% 0.095 239.1)
-
Step 400
400 (this color)
#17A7EF
oklch(69.3% 0.151 238.9)
-
Step 500
500
#0093D5
oklch(63.1% 0.142 238.9)
-
Step 600
600
#007BB4
oklch(55.5% 0.126 239.3)
-
Step 700
700
#006898
oklch(49.2% 0.11 238.7)
-
Step 800
800
#00557D
oklch(42.7% 0.096 238.5)
-
Step 900
900
#004769
oklch(37.8% 0.084 238.3)
-
Step 950
950
#002A41
oklch(27.1% 0.061 239)
#17A7EF 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) | #84A8F2 | 0.079 |
| Deuteranopia (no green cones) | #6896EE | 0.062 |
| Tritanopia (no blue cones) | #00B9C0 | 0.098 |
| Achromatopsia (no color) | #9E9E9E | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17A7EF
#17A7EF
oklch(69.3% 0.151 238.9)
- #E08125
#E08125
oklch(69.3% 0.152 58.5)
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 #17A7EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.050
- Cornflower Blue #6495ED ΔE 0.061
- Deep Sky Blue #00BFFF ΔE 0.065
- Dark Sky Blue #448EE4 ΔE 0.066
- Dodger Blue #1E90FF ΔE 0.071
- Turquoise Blue #06B1C4 ΔE 0.078
- Soft Blue #6488EA ΔE 0.087
- Water Blue #0E87CC ΔE 0.096
Use #17A7EF 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.