#366E64
Closest named color: Dark Aquamarine (#017371). oklch(49.7% 0.062 180.6), rgb(54, 110, 100).
Aa
White text reads best on this color (5.88:1).
About this color
#366E64 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 50%, its chroma 0.062 and its hue 181°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aquamarine (#017371), ΔE 0.029 away. White text reads best on it, at 5.88:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.57:1 |
| White text | 5.88:1 |
Values
| HEX | #366E64 |
| RGB | rgb(54, 110, 100) |
| HSL | hsl(169, 34%, 32%) |
| OKLCH | oklch(49.7% 0.062 180.6) |
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 #366E64 | 5.88:1 | AA | Lc -84.5 | Fine for body text |
| Black text on #366E64 | 3.57:1 | AA large text | Lc 24.8 | Dividers and decoration only |
| #366E64 text on white | 5.88:1 | AA | Lc 79.3 | Fine for body text |
| #366E64 text on black | 3.57:1 | AA large text | Lc -22.5 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E4ECEA
oklch(93.6% 0.009 179.6)
-
Step 200
200
#CEDDD9
oklch(88.5% 0.017 178.2)
-
Step 300
300
#ADC7C1
oklch(80.8% 0.029 180.1)
-
Step 400
400
#80ABA2
oklch(70.7% 0.048 180.5)
-
Step 500
500
#5E968B
oklch(63.1% 0.062 180.4)
-
Step 600
600
#438075
oklch(55.5% 0.066 180.7)
-
Step 700
700 (this color)
#366E64
oklch(49.7% 0.062 180.6)
-
Step 800
800
#2C5850
oklch(42.6% 0.051 180.5)
-
Step 900
900
#284943
oklch(37.8% 0.04 181.1)
-
Step 950
950
#182B27
oklch(27.1% 0.026 179.4)
#366E64 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) | #6A6864 | 0.066 |
| Deuteranopia (no green cones) | #616265 | 0.062 |
| Tritanopia (no blue cones) | #1C706B | 0.019 |
| Achromatopsia (no color) | #646464 | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #366E64
#366E64
oklch(49.7% 0.062 180.6)
- #805360
#805360
oklch(49.6% 0.062 0.8)
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 #366E64, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aquamarine #017371 ΔE 0.029
- Deep Turquoise #017374 ΔE 0.031
- Dark Aqua #05696B ΔE 0.036
- Bluegreen #017A79 ΔE 0.043
- Dark Green Blue #1F6357 ΔE 0.044
- Deep Aqua #08787F ΔE 0.045
- Slate #516572 ΔE 0.051
- Teal #008080 ΔE 0.059
Use #366E64 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.