#17A6B5
Closest named color: Turquoise Blue (#06B1C4). oklch(66.4% 0.11 206.5), rgb(23, 166, 181).
Aa
Black text reads best on this color (7.15:1).
About this color
#17A6B5 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.110 and its hue 207°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.033 away. Black text reads best on it, at 7.15:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 7.15:1 |
| White text | 2.93:1 |
Values
| HEX | #17A6B5 |
| RGB | rgb(23, 166, 181) |
| HSL | hsl(186, 77%, 40%) |
| OKLCH | oklch(66.4% 0.11 206.5) |
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 #17A6B5 | 2.93:1 | Fails | Lc -60.6 | Content text, not long reading |
| Black text on #17A6B5 | 7.15:1 | AAA | Lc 48.8 | Large or bold text, headings |
| #17A6B5 text on white | 2.93:1 | Fails | Lc 55.3 | Large or bold text, headings |
| #17A6B5 text on black | 7.15:1 | AAA | Lc -46.5 | 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 500.
-
Step 50
50
#F0F7F8
oklch(97.1% 0.008 207.1)
-
Step 100
100
#DFEDEF
oklch(93.6% 0.015 207.1)
-
Step 200
200
#C3DFE3
oklch(88.4% 0.03 207.1)
-
Step 300
300
#98CBD2
oklch(80.9% 0.054 206.7)
-
Step 400
400
#57B0BB
oklch(70.7% 0.086 206.1)
-
Step 500
500 (this color)
#17A6B5
oklch(66.4% 0.11 206.5)
-
Step 600
600
#00838F
oklch(55.7% 0.095 206.1)
-
Step 700
700
#006E78
oklch(49.1% 0.084 205.8)
-
Step 800
800
#005A63
oklch(42.7% 0.073 206.6)
-
Step 900
900
#004B53
oklch(37.7% 0.065 207)
-
Step 950
950
#012D31
oklch(27.1% 0.046 204.2)
#17A6B5 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) | #979FB6 | 0.107 |
| Deuteranopia (no green cones) | #8390B5 | 0.099 |
| Tritanopia (no blue cones) | #00AEAA | 0.033 |
| Achromatopsia (no color) | #979797 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17A6B5
#17A6B5
oklch(66.4% 0.11 206.5)
- #CE786F
#CE786F
oklch(66.4% 0.109 26.7)
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 #17A6B5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.033
- Light Sea Green #20B2AA ΔE 0.044
- Cadet Blue #5F9EA0 ΔE 0.047
- Sea #3C9992 ΔE 0.054
- Persian Green #2A9D8F ΔE 0.055
- Blue Green #0F9B8E ΔE 0.060
- Dull Teal #5F9E8F ΔE 0.061
- Teal Green #0A9396 ΔE 0.065
Use #17A6B5 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.