#178586
Closest named color: Dark Cyan (#008B8B). oklch(56.1% 0.091 195.9), rgb(23, 133, 134).
Aa
Black text reads best on this color (4.73:1).
About this color
#178586 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 56%, its chroma 0.091 and its hue 196°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.017 away. Black text reads best on it, at 4.73:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 4.73:1 |
| White text | 4.43:1 |
Values
| HEX | #178586 |
| RGB | rgb(23, 133, 134) |
| HSL | hsl(181, 71%, 31%) |
| OKLCH | oklch(56.1% 0.091 195.9) |
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 #178586 | 4.43:1 | AA large text | Lc -75.8 | Fine for body text |
| Black text on #178586 | 4.73:1 | AA | Lc 33.7 | Non-text elements, placeholder text |
| #178586 text on white | 4.43:1 | AA large text | Lc 70.3 | Content text, not long reading |
| #178586 text on black | 4.73:1 | AA | Lc -31.3 | 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
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E1ECEC
oklch(93.5% 0.012 197)
-
Step 200
200
#C9DEDE
oklch(88.5% 0.022 196.8)
-
Step 300
300
#A3C9C9
oklch(80.8% 0.04 196.4)
-
Step 400
400
#6EAEAE
oklch(70.8% 0.066 195.8)
-
Step 500
500
#41999A
oklch(63.1% 0.084 196.3)
-
Step 600
600 (this color)
#178586
oklch(56.1% 0.091 195.9)
-
Step 700
700
#006F70
oklch(49.1% 0.084 195.9)
-
Step 800
800
#0A5B5B
oklch(42.8% 0.07 194.9)
-
Step 900
900
#154A4B
oklch(37.6% 0.054 196.9)
-
Step 950
950
#0F2C2C
oklch(27.1% 0.035 195.3)
#178586 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) | #7B7E86 | 0.094 |
| Deuteranopia (no green cones) | #6C7387 | 0.088 |
| Tritanopia (no blue cones) | #008A85 | 0.016 |
| Achromatopsia (no color) | #787878 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #178586
#178586
oklch(56.1% 0.091 195.9)
- #A35E63
#A35E63
oklch(56.2% 0.09 15.7)
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 #178586, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.017
- Teal #008080 ΔE 0.018
- Bluegreen #017A79 ΔE 0.037
- Teal Blue #01889F ΔE 0.038
- Deep Aqua #08787F ΔE 0.040
- Ocean #017B92 ΔE 0.042
- Teal Green #0A9396 ΔE 0.043
- Dusty Teal #4C9085 ΔE 0.052
Use #178586 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.