#186C69
Closest named color: Dark Aqua (#05696B). oklch(48.3% 0.076 191.3), rgb(24, 108, 105).
Aa
White text reads best on this color (6.19:1).
About this color
#186C69 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 48%, its chroma 0.076 and its hue 191°. 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 6.19:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Dark Aqua (#05696B) |
| Black text | 3.38:1 |
| White text | 6.19:1 |
Values
| HEX | #186C69 |
| RGB | rgb(24, 108, 105) |
| HSL | hsl(178, 64%, 26%) |
| OKLCH | oklch(48.3% 0.076 191.3) |
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 #186C69 | 6.19:1 | AA | Lc -85.7 | Fine for body text |
| Black text on #186C69 | 3.38:1 | AA large text | Lc 23.5 | Dividers and decoration only |
| #186C69 text on white | 6.19:1 | AA | Lc 80.6 | Fine for body text |
| #186C69 text on black | 3.38:1 | AA large text | Lc -21.3 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E2ECEB
oklch(93.5% 0.011 189.8)
-
Step 200
200
#CBDEDC
oklch(88.6% 0.02 189.2)
-
Step 300
300
#A6C9C6
oklch(81% 0.038 190)
-
Step 400
400
#75ADA9
oklch(70.8% 0.059 190.3)
-
Step 500
500
#4D9895
oklch(63.1% 0.075 192)
-
Step 600
600
#2B827F
oklch(55.5% 0.081 191.8)
-
Step 700
700 (this color)
#186C69
oklch(48.3% 0.076 191.3)
-
Step 800
800
#1A5A57
oklch(42.7% 0.063 190.6)
-
Step 900
900
#1D4A48
oklch(37.7% 0.049 191.3)
-
Step 950
950
#122B2A
oklch(26.9% 0.031 192.1)
#186C69 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) | #656669 | 0.080 |
| Deuteranopia (no green cones) | #595D6A | 0.076 |
| Tritanopia (no blue cones) | #006F6B | 0.010 |
| Achromatopsia (no color) | #616161 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #186C69
#186C69
oklch(48.3% 0.076 191.3)
- #844C54
#844C54
oklch(48.4% 0.076 11.1)
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 #186C69, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aqua #05696B ΔE 0.013
- Dark Aquamarine #017371 ΔE 0.022
- Deep Turquoise #017374 ΔE 0.023
- Dark Green Blue #1F6357 ΔE 0.034
- Deep Aqua #08787F ΔE 0.043
- Bluegreen #017A79 ΔE 0.043
- Petrol #005F6A ΔE 0.045
- Slate #516572 ΔE 0.059
Use #186C69 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.