#17ABEF
Closest named color: Deep Sky Blue (#00BFFF). oklch(70.2% 0.149 236.8), rgb(23, 171, 239).
Aa
Black text reads best on this color (8.10:1).
About this color
#17ABEF is a medium-light, vivid blue. In OKLCH its lightness is 70%, its chroma 0.149 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.055 away. Black text reads best on it, at 8.10:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | vivid (0.149) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 8.10:1 |
| White text | 2.59:1 |
Values
| HEX | #17ABEF |
| RGB | rgb(23, 171, 239) |
| HSL | hsl(199, 87%, 51%) |
| OKLCH | oklch(70.2% 0.149 236.8) |
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 #17ABEF | 2.59:1 | Fails | Lc -55.1 | Large or bold text, headings |
| Black text on #17ABEF | 8.10:1 | AAA | Lc 54.0 | Large or bold text, headings |
| #17ABEF text on white | 2.59:1 | Fails | Lc 50.0 | Large or bold text, headings |
| #17ABEF text on black | 8.10:1 | AAA | Lc -51.9 | 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
#EEF7FD
oklch(97.1% 0.013 236.6)
-
Step 100
100
#DAEDFA
oklch(93.6% 0.027 237.6)
-
Step 200
200
#BADFF7
oklch(88.5% 0.051 236.6)
-
Step 300
300
#85CAF5
oklch(80.9% 0.093 236.9)
-
Step 400
400 (this color)
#17ABEF
oklch(70.2% 0.149 236.8)
-
Step 500
500
#0094D1
oklch(63.1% 0.137 236.6)
-
Step 600
600
#007CB1
oklch(55.6% 0.122 237.2)
-
Step 700
700
#006895
oklch(49% 0.107 237)
-
Step 800
800
#00557B
oklch(42.6% 0.093 237.2)
-
Step 900
900
#004767
oklch(37.7% 0.082 236.6)
-
Step 950
950
#002A3F
oklch(27% 0.059 236.5)
#17ABEF 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) | #8AABF2 | 0.084 |
| Deuteranopia (no green cones) | #6E99EE | 0.067 |
| Tritanopia (no blue cones) | #00BCC3 | 0.092 |
| Achromatopsia (no color) | #A1A1A1 | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17ABEF
#17ABEF
oklch(70.2% 0.149 236.8)
- #E38432
#E38432
oklch(70.3% 0.149 57)
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 #17ABEF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.055
- Chefchaouen Blue #4895EF ΔE 0.060
- Cornflower Blue #6495ED ΔE 0.068
- Turquoise Blue #06B1C4 ΔE 0.072
- Dark Sky Blue #448EE4 ΔE 0.076
- Dodger Blue #1E90FF ΔE 0.081
- Bright Sky Blue #02CCFE ΔE 0.089
- Vivid Sky Blue #4CC9F0 ΔE 0.091
Use #17ABEF 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.