#17BFEE
Closest named color: Deep Sky Blue (#00BFFF). oklch(74.9% 0.138 224.3), rgb(23, 191, 238).
Aa
Black text reads best on this color (9.72:1).
About this color
#17BFEE is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 75%, its chroma 0.138 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.025 away. Black text reads best on it, at 9.72:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (75%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 9.72:1 |
| White text | 2.15:1 |
Values
| HEX | #17BFEE |
| RGB | rgb(23, 191, 238) |
| HSL | hsl(193, 86%, 51%) |
| OKLCH | oklch(74.9% 0.138 224.3) |
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 #17BFEE | 2.15:1 | Fails | Lc -46.5 | Large or bold text, headings |
| Black text on #17BFEE | 9.72:1 | AAA | Lc 62.1 | Content text, not long reading |
| #17BFEE text on white | 2.15:1 | Fails | Lc 41.8 | Non-text elements, placeholder text |
| #17BFEE text on black | 9.72:1 | AAA | Lc -60.4 | 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 400.
-
Step 50
50
#EEF7FB
oklch(97.1% 0.011 226)
-
Step 100
100
#D9EEF6
oklch(93.6% 0.025 222.6)
-
Step 200
200
#B8E1F1
oklch(88.6% 0.048 223.6)
-
Step 300
300
#80CDEA
oklch(80.9% 0.086 224.1)
-
Step 400
400 (this color)
#17BFEE
oklch(74.9% 0.138 224.3)
-
Step 500
500
#0098BF
oklch(63.2% 0.119 224.4)
-
Step 600
600
#007FA1
oklch(55.5% 0.105 225)
-
Step 700
700
#006B88
oklch(49.1% 0.093 224.9)
-
Step 800
800
#005870
oklch(42.8% 0.081 224.4)
-
Step 900
900
#00495D
oklch(37.7% 0.071 223.8)
-
Step 950
950
#002B39
oklch(26.9% 0.051 225.5)
#17BFEE 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) | #A5BBF0 | 0.106 |
| Deuteranopia (no green cones) | #8BA8ED | 0.093 |
| Tritanopia (no blue cones) | #00CDCE | 0.070 |
| Achromatopsia (no color) | #B0B0B0 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17BFEE
#17BFEE
oklch(74.9% 0.138 224.3)
- #F58F61
#F58F61
oklch(74.9% 0.138 44.4)
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 #17BFEE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.025
- Bright Sky Blue #02CCFE ΔE 0.038
- Vivid Sky Blue #4CC9F0 ΔE 0.038
- Turquoise Blue #06B1C4 ΔE 0.066
- Lightblue #7BC8F6 ΔE 0.068
- Dark Turquoise #00CED1 ΔE 0.069
- Aqua Blue #02D8E9 ΔE 0.073
- Sky #82CAFC ΔE 0.078
Use #17BFEE 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.