#017578
Closest named color: Deep Turquoise (#017374). oklch(51% 0.087 197.9), rgb(1, 117, 120).
Aa
White text reads best on this color (5.50:1).
About this color
#017578 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 51%, its chroma 0.087 and its hue 198°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Turquoise (#017374), ΔE 0.008 away. White text reads best on it, at 5.50:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Deep Turquoise (#017374) |
| Black text | 3.81:1 |
| White text | 5.50:1 |
Values
| HEX | #017578 |
| RGB | rgb(1, 117, 120) |
| HSL | hsl(182, 98%, 24%) |
| OKLCH | oklch(51% 0.087 197.9) |
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 #017578 | 5.50:1 | AA | Lc -82.2 | Fine for body text |
| Black text on #017578 | 3.81:1 | AA large text | Lc 27.1 | Dividers and decoration only |
| #017578 text on white | 5.50:1 | AA | Lc 76.9 | Fine for body text |
| #017578 text on black | 3.81:1 | AA large text | Lc -24.8 | 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 700.
-
Step 50
50
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E1ECED
oklch(93.5% 0.012 203.5)
-
Step 200
200
#C8DEDF
oklch(88.5% 0.024 200.1)
-
Step 300
300
#A2C9CA
oklch(80.8% 0.041 198.3)
-
Step 400
400
#6CAEB0
oklch(70.8% 0.067 198.2)
-
Step 500
500
#3E999C
oklch(63% 0.085 198.2)
-
Step 600
600
#088487
oklch(55.7% 0.093 197.7)
-
Step 700
700 (this color)
#017578
oklch(51% 0.087 197.9)
-
Step 800
800
#035B5D
oklch(42.8% 0.072 197.4)
-
Step 900
900
#134B4C
oklch(37.8% 0.056 196.8)
-
Step 950
950
#0E2C2D
oklch(27.1% 0.035 198.3)
#017578 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) | #6C6F78 | 0.089 |
| Deuteranopia (no green cones) | #5D6479 | 0.083 |
| Tritanopia (no blue cones) | #007A76 | 0.017 |
| Achromatopsia (no color) | #696969 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #017578
#017578
oklch(51% 0.087 197.9)
- #915153
#915153
oklch(51.1% 0.086 18.5)
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 #017578, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Turquoise #017374 ΔE 0.008
- Dark Aquamarine #017371 ΔE 0.011
- Deep Aqua #08787F ΔE 0.013
- Bluegreen #017A79 ΔE 0.016
- Teal #008080 ΔE 0.034
- Dark Aqua #05696B ΔE 0.038
- Ocean #017B92 ΔE 0.042
- Sea Blue #047495 ΔE 0.049
Use #017578 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.