#17B0D4
Closest named color: Turquoise Blue (#06B1C4). oklch(70.1% 0.124 220), rgb(23, 176, 212).
Aa
Black text reads best on this color (8.19:1).
About this color
#17B0D4 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 70%, its chroma 0.124 and its hue 220°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.026 away. Black text reads best on it, at 8.19:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 8.19:1 |
| White text | 2.56:1 |
Values
| HEX | #17B0D4 |
| RGB | rgb(23, 176, 212) |
| HSL | hsl(191, 80%, 46%) |
| OKLCH | oklch(70.1% 0.124 220) |
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 #17B0D4 | 2.56:1 | Fails | Lc -54.7 | Large or bold text, headings |
| Black text on #17B0D4 | 8.19:1 | AAA | Lc 54.4 | Large or bold text, headings |
| #17B0D4 text on white | 2.56:1 | Fails | Lc 49.6 | Large or bold text, headings |
| #17B0D4 text on black | 8.19:1 | AAA | Lc -52.4 | 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
#EEF7FA
oklch(97% 0.01 219.6)
-
Step 100
100
#DAEEF4
oklch(93.6% 0.023 217.6)
-
Step 200
200
#BBE0ED
oklch(88.4% 0.043 221.1)
-
Step 300
300
#86CDE3
oklch(80.9% 0.077 219.5)
-
Step 400
400 (this color)
#17B0D4
oklch(70.1% 0.124 220)
-
Step 500
500
#0099B9
oklch(63.1% 0.115 219.7)
-
Step 600
600
#00809C
oklch(55.5% 0.101 220.3)
-
Step 700
700
#006C84
oklch(49.2% 0.09 220.2)
-
Step 800
800
#00586C
oklch(42.6% 0.078 220.2)
-
Step 900
900
#004A5B
oklch(37.8% 0.069 219.8)
-
Step 950
950
#002C37
oklch(27.1% 0.049 219.4)
#17B0D4 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) | #9AABD6 | 0.103 |
| Deuteranopia (no green cones) | #839BD4 | 0.091 |
| Tritanopia (no blue cones) | #00BCBC | 0.057 |
| Achromatopsia (no color) | #A2A2A2 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17B0D4
#17B0D4
oklch(70.1% 0.124 220)
- #E08262
#E08262
oklch(70.1% 0.125 39.5)
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 #17B0D4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.026
- Light Sea Green #20B2AA ΔE 0.065
- Deep Sky Blue #00BFFF ΔE 0.067
- Topaz #13BBAF ΔE 0.072
- Greyblue #77A1B5 ΔE 0.073
- Cadet Blue #5F9EA0 ΔE 0.081
- Vivid Sky Blue #4CC9F0 ΔE 0.081
- Bluegrey #85A3B2 ΔE 0.085
Use #17B0D4 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.