#17898E
Closest named color: Dark Cyan (#008B8B). oklch(57.5% 0.093 199.6), rgb(23, 137, 142).
Aa
Black text reads best on this color (5.00:1).
About this color
#17898E is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 57%, its chroma 0.093 and its hue 200°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.010 away. Black text reads best on it, at 5.00:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 5.00:1 |
| White text | 4.19:1 |
Values
| HEX | #17898E |
| RGB | rgb(23, 137, 142) |
| HSL | hsl(183, 72%, 32%) |
| OKLCH | oklch(57.5% 0.093 199.6) |
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 #17898E | 4.19:1 | AA large text | Lc -74.0 | Content text, not long reading |
| Black text on #17898E | 5.00:1 | AA | Lc 35.6 | Non-text elements, placeholder text |
| #17898E text on white | 4.19:1 | AA large text | Lc 68.5 | Content text, not long reading |
| #17898E text on black | 5.00:1 | AA | Lc -33.2 | 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
#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
#A2C9CB
oklch(80.8% 0.041 200.2)
-
Step 400
400
#6CAEB1
oklch(70.8% 0.067 199.4)
-
Step 500
500
#3E999D
oklch(63.1% 0.085 199.2)
-
Step 600
600 (this color)
#17898E
oklch(57.5% 0.093 199.6)
-
Step 700
700
#006F73
oklch(49.2% 0.084 199.2)
-
Step 800
800
#035B5E
oklch(42.8% 0.072 198.8)
-
Step 900
900
#134A4D
oklch(37.6% 0.056 200.4)
-
Step 950
950
#0E2C2D
oklch(27.1% 0.035 198.3)
#17898E 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) | #7E828E | 0.095 |
| Deuteranopia (no green cones) | #6E778F | 0.087 |
| Tritanopia (no blue cones) | #008E8A | 0.019 |
| Achromatopsia (no color) | #7C7C7C | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17898E
#17898E
oklch(57.5% 0.093 199.6)
- #A96162
#A96162
oklch(57.4% 0.094 19.5)
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 #17898E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.010
- Teal Blue #01889F ΔE 0.028
- Teal Green #0A9396 ΔE 0.029
- Teal #008080 ΔE 0.033
- Dusty Teal #4C9085 ΔE 0.045
- Ocean #017B92 ΔE 0.047
- Bluegreen #017A79 ΔE 0.051
- Deep Aqua #08787F ΔE 0.053
Use #17898E 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.