#186A71
Closest named color: Dark Aqua (#05696B). oklch(48.1% 0.075 203.6), rgb(24, 106, 113).
Aa
White text reads best on this color (6.28:1).
About this color
#186A71 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 48%, its chroma 0.075 and its hue 204°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aqua (#05696B), ΔE 0.013 away. White text reads best on it, at 6.28:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Dark Aqua (#05696B) |
| Black text | 3.33:1 |
| White text | 6.28:1 |
Values
| HEX | #186A71 |
| RGB | rgb(24, 106, 113) |
| HSL | hsl(185, 65%, 27%) |
| OKLCH | oklch(48.1% 0.075 203.6) |
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 #186A71 | 6.28:1 | AA | Lc -86.1 | Fine for body text |
| Black text on #186A71 | 3.33:1 | AA large text | Lc 23.1 | Dividers and decoration only |
| #186A71 text on white | 6.28:1 | AA | Lc 81.0 | Fine for body text |
| #186A71 text on black | 3.33:1 | AA large text | Lc -20.9 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECED
oklch(93.6% 0.011 204.1)
-
Step 200
200
#CBDDDF
oklch(88.5% 0.019 204.8)
-
Step 300
300
#A6C8CB
oklch(80.9% 0.037 203)
-
Step 400
400
#75ACB1
oklch(70.8% 0.058 203.1)
-
Step 500
500
#4D979E
oklch(63.2% 0.074 203.6)
-
Step 600
600
#2B8189
oklch(55.6% 0.081 204)
-
Step 700
700 (this color)
#186A71
oklch(48.1% 0.075 203.6)
-
Step 800
800
#1B595E
oklch(42.7% 0.062 202.8)
-
Step 900
900
#1D494D
oklch(37.6% 0.049 203.4)
-
Step 950
950
#132B2D
oklch(27.1% 0.03 202.6)
#186A71 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) | #616572 | 0.075 |
| Deuteranopia (no green cones) | #555C71 | 0.069 |
| Tritanopia (no blue cones) | #006F6C | 0.021 |
| Achromatopsia (no color) | #606060 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #186A71
#186A71
oklch(48.1% 0.075 203.6)
- #834C49
#834C49
oklch(48% 0.075 23.6)
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 #186A71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aqua #05696B ΔE 0.013
- Deep Turquoise #017374 ΔE 0.027
- Dark Aquamarine #017371 ΔE 0.028
- Petrol #005F6A ΔE 0.037
- Dark Green Blue #1F6357 ΔE 0.041
- Deep Aqua #08787F ΔE 0.043
- Bluegreen #017A79 ΔE 0.048
- Slate #516572 ΔE 0.053
Use #186A71 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.