#17857C
Closest named color: Teal (#008080). oklch(55.8% 0.093 186.2), rgb(23, 133, 124).
Aa
Black text reads best on this color (4.68:1).
About this color
#17857C is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 56%, its chroma 0.093 and its hue 186°. Its hue sits on the cool side of the wheel. The nearest named color is Teal (#008080), ΔE 0.020 away. Black text reads best on it, at 4.68:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Teal (#008080) |
| Black text | 4.68:1 |
| White text | 4.48:1 |
Values
| HEX | #17857C |
| RGB | rgb(23, 133, 124) |
| HSL | hsl(175, 71%, 31%) |
| OKLCH | oklch(55.8% 0.093 186.2) |
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 #17857C | 4.48:1 | AA large text | Lc -76.2 | Fine for body text |
| Black text on #17857C | 4.68:1 | AA | Lc 33.4 | Non-text elements, placeholder text |
| #17857C text on white | 4.48:1 | AA large text | Lc 70.7 | Content text, not long reading |
| #17857C text on black | 4.68:1 | AA | Lc -31.0 | 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
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E1EDEB
oklch(93.7% 0.013 185.1)
-
Step 200
200
#C9DEDB
oklch(88.4% 0.023 186.4)
-
Step 300
300
#A3CAC5
oklch(80.9% 0.042 186.8)
-
Step 400
400
#6FAEA7
oklch(70.6% 0.066 186.9)
-
Step 500
500
#429A91
oklch(63% 0.085 186.2)
-
Step 600
600 (this color)
#17857C
oklch(55.8% 0.093 186.2)
-
Step 700
700
#007068
oklch(49.1% 0.086 186.2)
-
Step 800
800
#0B5B55
oklch(42.6% 0.071 186.8)
-
Step 900
900
#164B46
oklch(37.7% 0.056 186.3)
-
Step 950
950
#0F2C29
oklch(27% 0.035 186.3)
#17857C 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) | #7E7D7C | 0.099 |
| Deuteranopia (no green cones) | #6F727D | 0.094 |
| Tritanopia (no blue cones) | #008882 | 0.011 |
| Achromatopsia (no color) | #777777 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17857C
#17857C
oklch(55.8% 0.093 186.2)
- #A15C6B
#A15C6B
oklch(55.8% 0.092 6.5)
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 #17857C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal #008080 ΔE 0.020
- Dark Cyan #008B8B ΔE 0.024
- Bluegreen #017A79 ΔE 0.035
- Deep Aqua #08787F ΔE 0.044
- Teal Green #0A9396 ΔE 0.049
- Dusty Teal #4C9085 ΔE 0.052
- Teal Blue #01889F ΔE 0.053
- Ocean #017B92 ΔE 0.054
Use #17857C 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.