#18656D
Closest named color: Dark Aqua (#05696B). oklch(46.6% 0.072 205.4), rgb(24, 101, 109).
Aa
White text reads best on this color (6.72:1).
About this color
#18656D is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 47%, its chroma 0.072 and its hue 205°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aqua (#05696B), ΔE 0.015 away. White text reads best on it, at 6.72:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Dark Aqua (#05696B) |
| Black text | 3.12:1 |
| White text | 6.72:1 |
Values
| HEX | #18656D |
| RGB | rgb(24, 101, 109) |
| HSL | hsl(186, 64%, 26%) |
| OKLCH | oklch(46.6% 0.072 205.4) |
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 #18656D | 6.72:1 | AA | Lc -87.9 | Fine for body text |
| Black text on #18656D | 3.12:1 | AA large text | Lc 21.2 | Dividers and decoration only |
| #18656D text on white | 6.72:1 | AA | Lc 82.9 | Fine for body text |
| #18656D text on black | 3.12:1 | AA large text | Lc -19.1 | 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
#E3ECED
oklch(93.7% 0.01 204.9)
-
Step 200
200
#CBDDDF
oklch(88.5% 0.019 204.8)
-
Step 300
300
#A7C8CB
oklch(81% 0.036 203.2)
-
Step 400
400
#77ABB1
oklch(70.7% 0.055 205)
-
Step 500
500
#51969E
oklch(63.1% 0.071 205.3)
-
Step 600
600
#308089
oklch(55.5% 0.077 205.6)
-
Step 700
700 (this color)
#18656D
oklch(46.6% 0.072 205.4)
-
Step 800
800
#1F585F
oklch(42.6% 0.059 206.5)
-
Step 900
900
#20494D
oklch(37.8% 0.046 203.9)
-
Step 950
950
#142B2D
oklch(27.1% 0.029 202.9)
#18656D 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) | #5C616E | 0.071 |
| Deuteranopia (no green cones) | #50586D | 0.064 |
| Tritanopia (no blue cones) | #006A67 | 0.022 |
| Achromatopsia (no color) | #5C5C5C | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18656D
#18656D
oklch(46.6% 0.072 205.4)
- #7D4945
#7D4945
oklch(46.5% 0.072 24.9)
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 #18656D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aqua #05696B ΔE 0.015
- Petrol #005F6A ΔE 0.022
- Dark Green Blue #1F6357 ΔE 0.035
- Deep Turquoise #017374 ΔE 0.042
- Dark Aquamarine #017371 ΔE 0.043
- YInMn Blue #415A77 ΔE 0.054
- Slate #516572 ΔE 0.056
- Deep Teal #00555A ΔE 0.057
Use #18656D 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.