#17B9C1
Closest named color: Turquoise Blue (#06B1C4). oklch(71.6% 0.119 200.5), rgb(23, 185, 193).
Aa
Black text reads best on this color (8.74:1).
About this color
#17B9C1 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 72%, its chroma 0.119 and its hue 200°. 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 8.74:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 8.74:1 |
| White text | 2.40:1 |
Values
| HEX | #17B9C1 |
| RGB | rgb(23, 185, 193) |
| HSL | hsl(183, 79%, 42%) |
| OKLCH | oklch(71.6% 0.119 200.5) |
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 #17B9C1 | 2.40:1 | Fails | Lc -51.7 | Large or bold text, headings |
| Black text on #17B9C1 | 8.74:1 | AAA | Lc 57.2 | Large or bold text, headings |
| #17B9C1 text on white | 2.40:1 | Fails | Lc 46.7 | Large or bold text, headings |
| #17B9C1 text on black | 8.74:1 | AAA | Lc -55.3 | 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
#EEF8F8
oklch(97.2% 0.011 197)
-
Step 100
100
#DAEEF0
oklch(93.5% 0.021 204)
-
Step 200
200
#BAE2E4
oklch(88.5% 0.042 200.2)
-
Step 300
300
#85CFD4
oklch(80.8% 0.074 201.3)
-
Step 400
400 (this color)
#17B9C1
oklch(71.6% 0.119 200.5)
-
Step 500
500
#009CA3
oklch(63% 0.107 200.4)
-
Step 600
600
#008389
oklch(55.5% 0.094 200.5)
-
Step 700
700
#006F74
oklch(49.2% 0.084 200.3)
-
Step 800
800
#005B5F
oklch(42.8% 0.073 200)
-
Step 900
900
#004B4F
oklch(37.5% 0.064 200.9)
-
Step 950
950
#002D2F
oklch(27% 0.046 199.4)
#17B9C1 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) | #AAB0C2 | 0.120 |
| Deuteranopia (no green cones) | #95A0C2 | 0.113 |
| Tritanopia (no blue cones) | #00C0BB | 0.025 |
| Achromatopsia (no color) | #A7A7A7 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17B9C1
#17B9C1
oklch(71.6% 0.119 200.5)
- #E48484
#E48484
oklch(71.7% 0.118 20.4)
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 #17B9C1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.026
- Topaz #13BBAF ΔE 0.029
- Light Sea Green #20B2AA ΔE 0.034
- Dark Turquoise #00CED1 ΔE 0.058
- Greeny Blue #42B395 ΔE 0.061
- Medium Turquoise #48D1CC ΔE 0.073
- Cadet Blue #5F9EA0 ΔE 0.079
- Vivid Sky Blue #4CC9F0 ΔE 0.081
Use #17B9C1 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.