#366C6D
Closest named color: Deep Turquoise (#017374). oklch(49.5% 0.057 197), rgb(54, 108, 109).
Aa
White text reads best on this color (5.96:1).
About this color
#366C6D is a medium-dark, muted teal or cyan. In OKLCH its lightness is 49%, its chroma 0.057 and its hue 197°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Turquoise (#017374), ΔE 0.030 away. White text reads best on it, at 5.96:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (49%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Deep Turquoise (#017374) |
| Black text | 3.52:1 |
| White text | 5.96:1 |
Values
| HEX | #366C6D |
| RGB | rgb(54, 108, 109) |
| HSL | hsl(181, 34%, 32%) |
| OKLCH | oklch(49.5% 0.057 197) |
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 #366C6D | 5.96:1 | AA | Lc -84.9 | Fine for body text |
| Black text on #366C6D | 3.52:1 | AA large text | Lc 24.4 | Dividers and decoration only |
| #366C6D text on white | 5.96:1 | AA | Lc 79.7 | Fine for body text |
| #366C6D text on black | 3.52:1 | AA large text | Lc -22.2 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E4ECEC
oklch(93.7% 0.009 197)
-
Step 200
200
#CEDCDC
oklch(88.4% 0.015 196.9)
-
Step 300
300
#ADC6C7
oklch(80.8% 0.027 199.6)
-
Step 400
400
#80AAAA
oklch(70.8% 0.045 196.2)
-
Step 500
500
#5F9495
oklch(63% 0.056 197.3)
-
Step 600
600
#447F80
oklch(55.7% 0.062 197)
-
Step 700
700 (this color)
#366C6D
oklch(49.5% 0.057 197)
-
Step 800
800
#2D5758
oklch(42.7% 0.047 197.5)
-
Step 900
900
#294848
oklch(37.8% 0.037 195.7)
-
Step 950
950
#182A2A
oklch(26.9% 0.024 195.8)
#366C6D 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) | #66686D | 0.060 |
| Deuteranopia (no green cones) | #5C616D | 0.054 |
| Tritanopia (no blue cones) | #156F6C | 0.023 |
| Achromatopsia (no color) | #646464 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #366C6D
#366C6D
oklch(49.5% 0.057 197)
- #7F5456
#7F5456
oklch(49.4% 0.058 16.3)
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 #366C6D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Turquoise #017374 ΔE 0.030
- Dark Aquamarine #017371 ΔE 0.030
- Dark Aqua #05696B ΔE 0.031
- Slate #516572 ΔE 0.039
- Deep Aqua #08787F ΔE 0.041
- Bluegreen #017A79 ΔE 0.044
- Dark Green Blue #1F6357 ΔE 0.047
- Petrol #005F6A ΔE 0.056
Use #366C6D 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.