#17B2C4
Closest named color: Turquoise Blue (#06B1C4). oklch(70% 0.117 207.9), rgb(23, 178, 196).
Aa
Black text reads best on this color (8.20:1).
About this color
#17B2C4 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 70%, its chroma 0.117 and its hue 208°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.004 away. Black text reads best on it, at 8.20:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 8.20:1 |
| White text | 2.56:1 |
Values
| HEX | #17B2C4 |
| RGB | rgb(23, 178, 196) |
| HSL | hsl(186, 79%, 43%) |
| OKLCH | oklch(70% 0.117 207.9) |
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 #17B2C4 | 2.56:1 | Fails | Lc -54.7 | Large or bold text, headings |
| Black text on #17B2C4 | 8.20:1 | AAA | Lc 54.4 | Large or bold text, headings |
| #17B2C4 text on white | 2.56:1 | Fails | Lc 49.6 | Large or bold text, headings |
| #17B2C4 text on black | 8.20:1 | 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
#EEF7F9
oklch(97% 0.01 212.5)
-
Step 100
100
#DBEEF1
oklch(93.6% 0.021 208.1)
-
Step 200
200
#BBE1E7
oklch(88.4% 0.041 208.1)
-
Step 300
300
#87CED9
oklch(80.8% 0.073 208.2)
-
Step 400
400 (this color)
#17B2C4
oklch(70% 0.117 207.9)
-
Step 500
500
#009BAB
oklch(63% 0.108 207.7)
-
Step 600
600
#008290
oklch(55.5% 0.095 208)
-
Step 700
700
#006E7A
oklch(49.2% 0.085 207.9)
-
Step 800
800
#005A64
oklch(42.8% 0.073 207.9)
-
Step 900
900
#004B53
oklch(37.7% 0.065 207)
-
Step 950
950
#002D32
oklch(27.1% 0.046 206.3)
#17B2C4 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) | #A1ABC5 | 0.112 |
| Deuteranopia (no green cones) | #8C9BC4 | 0.103 |
| Tritanopia (no blue cones) | #00BBB7 | 0.037 |
| Achromatopsia (no color) | #A2A2A2 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17B2C4
#17B2C4
oklch(70% 0.117 207.9)
- #DE8175
#DE8175
oklch(70.1% 0.117 28.2)
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 #17B2C4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.004
- Light Sea Green #20B2AA ΔE 0.039
- Topaz #13BBAF ΔE 0.047
- Cadet Blue #5F9EA0 ΔE 0.068
- Greeny Blue #42B395 ΔE 0.070
- Greyblue #77A1B5 ΔE 0.071
- Dark Turquoise #00CED1 ΔE 0.078
- Bluegrey #85A3B2 ΔE 0.081
Use #17B2C4 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.