#178680
Closest named color: Dark Cyan (#008B8B). oklch(56.2% 0.092 189.1), rgb(23, 134, 128).
Aa
Black text reads best on this color (4.75:1).
About this color
#178680 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 56%, its chroma 0.092 and its hue 189°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.019 away. Black text reads best on it, at 4.75:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 4.75:1 |
| White text | 4.41:1 |
Values
| HEX | #178680 |
| RGB | rgb(23, 134, 128) |
| HSL | hsl(177, 71%, 31%) |
| OKLCH | oklch(56.2% 0.092 189.1) |
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 #178680 | 4.41:1 | AA large text | Lc -75.7 | Fine for body text |
| Black text on #178680 | 4.75:1 | AA | Lc 33.9 | Non-text elements, placeholder text |
| #178680 text on white | 4.41:1 | AA large text | Lc 70.2 | Content text, not long reading |
| #178680 text on black | 4.75:1 | AA | Lc -31.5 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E1EDEB
oklch(93.7% 0.013 185.1)
-
Step 200
200
#C9DEDC
oklch(88.4% 0.023 189.8)
-
Step 300
300
#A3CAC6
oklch(81% 0.042 188.7)
-
Step 400
400
#6EAEA9
oklch(70.6% 0.066 189.5)
-
Step 500
500
#419A94
oklch(63.1% 0.085 189.2)
-
Step 600
600 (this color)
#178680
oklch(56.2% 0.092 189.1)
-
Step 700
700
#00706B
oklch(49.2% 0.085 189.4)
-
Step 800
800
#095B57
oklch(42.6% 0.071 189.5)
-
Step 900
900
#154B48
oklch(37.7% 0.056 189.8)
-
Step 950
950
#0F2C2A
oklch(27% 0.035 189.2)
#178680 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) | #7E7E80 | 0.098 |
| Deuteranopia (no green cones) | #6F7381 | 0.093 |
| Tritanopia (no blue cones) | #008A84 | 0.012 |
| Achromatopsia (no color) | #787878 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #178680
#178680
oklch(56.2% 0.092 189.1)
- #A35D69
#A35D69
oklch(56.2% 0.092 9.5)
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 #178680, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.019
- Teal #008080 ΔE 0.021
- Bluegreen #017A79 ΔE 0.038
- Teal Green #0A9396 ΔE 0.044
- Deep Aqua #08787F ΔE 0.045
- Teal Blue #01889F ΔE 0.047
- Dusty Teal #4C9085 ΔE 0.049
- Ocean #017B92 ΔE 0.051
Use #178680 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.