#178178
Closest named color: Teal (#008080). oklch(54.5% 0.09 186), rgb(23, 129, 120).
Aa
White text reads best on this color (4.72:1).
About this color
#178178 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 55%, its chroma 0.090 and its hue 186°. Its hue sits on the cool side of the wheel. The nearest named color is Teal (#008080), ΔE 0.014 away. White text reads best on it, at 4.72:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Teal (#008080) |
| Black text | 4.44:1 |
| White text | 4.72:1 |
Values
| HEX | #178178 |
| RGB | rgb(23, 129, 120) |
| HSL | hsl(175, 70%, 30%) |
| OKLCH | oklch(54.5% 0.09 186) |
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 #178178 | 4.72:1 | AA | Lc -77.8 | Fine for body text |
| Black text on #178178 | 4.44:1 | AA large text | Lc 31.7 | Non-text elements, placeholder text |
| #178178 text on white | 4.72:1 | AA | Lc 72.4 | Content text, not long reading |
| #178178 text on black | 4.44:1 | AA large text | Lc -29.3 | Dividers and decoration only |
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
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E2EDEB
oklch(93.7% 0.012 184.1)
-
Step 200
200
#C9DEDB
oklch(88.4% 0.023 186.4)
-
Step 300
300
#A4CAC4
oklch(81% 0.041 184.7)
-
Step 400
400
#70AEA6
oklch(70.6% 0.065 185.6)
-
Step 500
500
#459A91
oklch(63.1% 0.083 186)
-
Step 600
600 (this color)
#178178
oklch(54.5% 0.09 186)
-
Step 700
700
#097068
oklch(49.2% 0.084 186.1)
-
Step 800
800
#105B55
oklch(42.7% 0.069 186.7)
-
Step 900
900
#184B46
oklch(37.7% 0.054 186.1)
-
Step 950
950
#102C29
oklch(27% 0.034 186.1)
#178178 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) | #7A7978 | 0.096 |
| Deuteranopia (no green cones) | #6C6F79 | 0.091 |
| Tritanopia (no blue cones) | #00847E | 0.011 |
| Achromatopsia (no color) | #737373 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #178178
#178178
oklch(54.5% 0.09 186)
- #9C5968
#9C5968
oklch(54.5% 0.09 6.1)
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 #178178, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal #008080 ΔE 0.014
- Bluegreen #017A79 ΔE 0.024
- Deep Aqua #08787F ΔE 0.034
- Dark Cyan #008B8B ΔE 0.035
- Dark Aquamarine #017371 ΔE 0.045
- Deep Turquoise #017374 ΔE 0.045
- Ocean #017B92 ΔE 0.051
- Teal Blue #01889F ΔE 0.059
Use #178178 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.