#18646F
Closest named color: Dark Aqua (#05696B). oklch(46.4% 0.072 209.3), rgb(24, 100, 111).
Aa
White text reads best on this color (6.79:1).
About this color
#18646F is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 46%, its chroma 0.072 and its hue 209°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aqua (#05696B), ΔE 0.020 away. White text reads best on it, at 6.79:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Dark Aqua (#05696B) |
| Black text | 3.09:1 |
| White text | 6.79:1 |
Values
| HEX | #18646F |
| RGB | rgb(24, 100, 111) |
| HSL | hsl(188, 64%, 26%) |
| OKLCH | oklch(46.4% 0.072 209.3) |
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 #18646F | 6.79:1 | AA | Lc -88.1 | Fine for body text |
| Black text on #18646F | 3.09:1 | AA large text | Lc 20.9 | Dividers and decoration only |
| #18646F text on white | 6.79:1 | AA | Lc 83.1 | Fine for body text |
| #18646F text on black | 3.09:1 | AA large text | Lc -18.8 | 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
#CBDDE0
oklch(88.5% 0.02 208.8)
-
Step 300
300
#A8C7CD
oklch(80.9% 0.034 210.7)
-
Step 400
400
#77ABB4
oklch(70.8% 0.056 209.4)
-
Step 500
500
#5196A1
oklch(63.2% 0.072 208.9)
-
Step 600
600
#31808C
oklch(55.7% 0.078 209.1)
-
Step 700
700 (this color)
#18646F
oklch(46.4% 0.072 209.3)
-
Step 800
800
#1F5861
oklch(42.7% 0.06 209.6)
-
Step 900
900
#20484F
oklch(37.6% 0.046 210.4)
-
Step 950
950
#142A2E
oklch(26.9% 0.029 210.5)
#18646F 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) | #5A6070 | 0.068 |
| Deuteranopia (no green cones) | #4E576F | 0.063 |
| Tritanopia (no blue cones) | #006967 | 0.025 |
| Achromatopsia (no color) | #5B5B5B | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18646F
#18646F
oklch(46.4% 0.072 209.3)
- #7D4941
#7D4941
oklch(46.4% 0.073 29.5)
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 #18646F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aqua #05696B ΔE 0.020
- Petrol #005F6A ΔE 0.020
- Dark Green Blue #1F6357 ΔE 0.039
- Deep Turquoise #017374 ΔE 0.046
- Dark Aquamarine #017371 ΔE 0.047
- YInMn Blue #415A77 ΔE 0.050
- Deep Teal #00555A ΔE 0.056
- Slate #516572 ΔE 0.056
Use #18646F 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.