#178193
Closest named color: Ocean (#017B92). oklch(55.6% 0.092 212.7), rgb(23, 129, 147).
Aa
Black text reads best on this color (4.59:1).
About this color
#178193 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 56%, its chroma 0.092 and its hue 213°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean (#017B92), ΔE 0.020 away. Black text reads best on it, at 4.59:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Ocean (#017B92) |
| Black text | 4.59:1 |
| White text | 4.56:1 |
Values
| HEX | #178193 |
| RGB | rgb(23, 129, 147) |
| HSL | hsl(189, 73%, 33%) |
| OKLCH | oklch(55.6% 0.092 212.7) |
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 #178193 | 4.56:1 | AA | Lc -76.8 | Fine for body text |
| Black text on #178193 | 4.59:1 | AA | Lc 32.8 | Non-text elements, placeholder text |
| #178193 text on white | 4.56:1 | AA | Lc 71.3 | Content text, not long reading |
| #178193 text on black | 4.59:1 | AA | Lc -30.4 | 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
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECEF
oklch(93.6% 0.012 215.8)
-
Step 200
200
#C9DDE2
oklch(88.4% 0.022 214.4)
-
Step 300
300
#A3C8D0
oklch(80.9% 0.041 212.3)
-
Step 400
400
#6EACB9
oklch(70.7% 0.066 212.4)
-
Step 500
500
#4297A8
oklch(63.1% 0.085 212.8)
-
Step 600
600 (this color)
#178193
oklch(55.6% 0.092 212.7)
-
Step 700
700
#016D7D
oklch(49.1% 0.085 212.3)
-
Step 800
800
#0C5966
oklch(42.8% 0.071 212.6)
-
Step 900
900
#164953
oklch(37.7% 0.055 213.2)
-
Step 950
950
#0F2B31
oklch(27% 0.035 213.8)
#178193 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) | #737C94 | 0.084 |
| Deuteranopia (no green cones) | #637193 | 0.075 |
| Tritanopia (no blue cones) | #008887 | 0.033 |
| Achromatopsia (no color) | #767676 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #178193
#178193
oklch(55.6% 0.092 212.7)
- #A25E50
#A25E50
oklch(55.6% 0.092 32.5)
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 #178193, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean #017B92 ΔE 0.020
- Teal Blue #01889F ΔE 0.024
- Teal #008080 ΔE 0.031
- Dark Cyan #008B8B ΔE 0.037
- Deep Aqua #08787F ΔE 0.038
- Cerulean #457B9D ΔE 0.040
- Sea Blue #047495 ΔE 0.042
- Bluegreen #017A79 ΔE 0.043
Use #178193 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.