#17B1C9
Closest named color: Turquoise Blue (#06B1C4). oklch(69.9% 0.119 212.2), rgb(23, 177, 201).
Aa
Black text reads best on this color (8.16:1).
About this color
#17B1C9 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 70%, its chroma 0.119 and its hue 212°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.008 away. Black text reads best on it, at 8.16:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 8.16:1 |
| White text | 2.57:1 |
Values
| HEX | #17B1C9 |
| RGB | rgb(23, 177, 201) |
| HSL | hsl(188, 79%, 44%) |
| OKLCH | oklch(69.9% 0.119 212.2) |
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 #17B1C9 | 2.57:1 | Fails | Lc -54.8 | Large or bold text, headings |
| Black text on #17B1C9 | 8.16:1 | AAA | Lc 54.3 | Large or bold text, headings |
| #17B1C9 text on white | 2.57:1 | Fails | Lc 49.7 | Large or bold text, headings |
| #17B1C9 text on black | 8.16:1 | AAA | Lc -52.2 | 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
#EEF7F9
oklch(97% 0.01 212.5)
-
Step 100
100
#DBEEF2
oklch(93.6% 0.021 211.8)
-
Step 200
200
#BBE1E9
oklch(88.5% 0.041 211.9)
-
Step 300
300
#87CEDD
oklch(81% 0.074 212.4)
-
Step 400
400 (this color)
#17B1C9
oklch(69.9% 0.119 212.2)
-
Step 500
500
#009AB0
oklch(63% 0.11 212.4)
-
Step 600
600
#008294
oklch(55.7% 0.097 211.6)
-
Step 700
700
#006D7D
oklch(49.1% 0.086 212.3)
-
Step 800
800
#005967
oklch(42.6% 0.075 213)
-
Step 900
900
#004A56
oklch(37.6% 0.066 213)
-
Step 950
950
#002C34
oklch(26.9% 0.047 213.2)
#17B1C9 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) | #9FABCA | 0.109 |
| Deuteranopia (no green cones) | #899BC9 | 0.098 |
| Tritanopia (no blue cones) | #00BBB8 | 0.044 |
| Achromatopsia (no color) | #A1A1A1 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17B1C9
#17B1C9
oklch(69.9% 0.119 212.2)
- #DE816F
#DE816F
oklch(70% 0.119 31.9)
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 #17B1C9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.008
- Light Sea Green #20B2AA ΔE 0.048
- Topaz #13BBAF ΔE 0.055
- Greyblue #77A1B5 ΔE 0.070
- Cadet Blue #5F9EA0 ΔE 0.071
- Greeny Blue #42B395 ΔE 0.079
- Deep Sky Blue #00BFFF ΔE 0.080
- Dark Turquoise #00CED1 ΔE 0.081
Use #17B1C9 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.