#17B2CF
Closest named color: Turquoise Blue (#06B1C4). oklch(70.4% 0.121 215.4), rgb(23, 178, 207).
Aa
Black text reads best on this color (8.30:1).
About this color
#17B2CF is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 70%, its chroma 0.121 and its hue 215°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.017 away. Black text reads best on it, at 8.30:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 8.30:1 |
| White text | 2.52:1 |
Values
| HEX | #17B2CF |
| RGB | rgb(23, 178, 207) |
| HSL | hsl(189, 80%, 45%) |
| OKLCH | oklch(70.4% 0.121 215.4) |
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 #17B2CF | 2.52:1 | Fails | Lc -54.1 | Large or bold text, headings |
| Black text on #17B2CF | 8.30:1 | AAA | Lc 55.0 | Large or bold text, headings |
| #17B2CF text on white | 2.52:1 | Fails | Lc 49.0 | Large or bold text, headings |
| #17B2CF text on black | 8.30:1 | AAA | Lc -52.9 | 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
#DAEEF3
oklch(93.6% 0.022 214.4)
-
Step 200
200
#BBE1EB
oklch(88.6% 0.042 215.5)
-
Step 300
300
#86CEE0
oklch(81% 0.076 215.3)
-
Step 400
400 (this color)
#17B2CF
oklch(70.4% 0.121 215.4)
-
Step 500
500
#009AB4
oklch(63.2% 0.112 215.3)
-
Step 600
600
#008197
oklch(55.5% 0.098 215.2)
-
Step 700
700
#006D80
oklch(49.2% 0.087 215.3)
-
Step 800
800
#005969
oklch(42.7% 0.076 215.4)
-
Step 900
900
#004A58
oklch(37.7% 0.067 215.8)
-
Step 950
950
#002C35
oklch(27% 0.048 215.4)
#17B2CF 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) | #9EACD1 | 0.107 |
| Deuteranopia (no green cones) | #879CCF | 0.096 |
| Tritanopia (no blue cones) | #00BCBB | 0.048 |
| Achromatopsia (no color) | #A3A3A3 | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17B2CF
#17B2CF
oklch(70.4% 0.121 215.4)
- #E0836A
#E0836A
oklch(70.4% 0.121 35.9)
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 #17B2CF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.017
- Light Sea Green #20B2AA ΔE 0.056
- Topaz #13BBAF ΔE 0.061
- Deep Sky Blue #00BFFF ΔE 0.072
- Greyblue #77A1B5 ΔE 0.072
- Cadet Blue #5F9EA0 ΔE 0.078
- Vivid Sky Blue #4CC9F0 ΔE 0.080
- Dark Turquoise #00CED1 ΔE 0.080
Use #17B2CF 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.