#406E64
Closest named color: Dark Aquamarine (#017371). oklch(50.2% 0.053 178.5), rgb(64, 110, 100).
Aa
White text reads best on this color (5.78:1).
About this color
#406E64 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 50%, its chroma 0.053 and its hue 179°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aquamarine (#017371), ΔE 0.036 away. White text reads best on it, at 5.78:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.63:1 |
| White text | 5.78:1 |
Values
| HEX | #406E64 |
| RGB | rgb(64, 110, 100) |
| HSL | hsl(167, 26%, 34%) |
| OKLCH | oklch(50.2% 0.053 178.5) |
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 #406E64 | 5.78:1 | AA | Lc -84.1 | Fine for body text |
| Black text on #406E64 | 3.63:1 | AA large text | Lc 25.2 | Dividers and decoration only |
| #406E64 text on white | 5.78:1 | AA | Lc 78.8 | Fine for body text |
| #406E64 text on black | 3.63:1 | AA large text | Lc -23.0 | 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
#E5EBEA
oklch(93.5% 0.007 185.3)
-
Step 200
200
#D0DCD9
oklch(88.5% 0.014 179.4)
-
Step 300
300
#B0C6C1
oklch(80.8% 0.025 180.5)
-
Step 400
400
#85A9A1
oklch(70.6% 0.041 180)
-
Step 500
500
#66948A
oklch(63% 0.052 179.5)
-
Step 600
600
#4C7F74
oklch(55.7% 0.058 178.8)
-
Step 700
700 (this color)
#406E64
oklch(50.2% 0.053 178.5)
-
Step 800
800
#33574F
oklch(42.7% 0.044 178.3)
-
Step 900
900
#2D4842
oklch(37.8% 0.035 178.8)
-
Step 950
950
#1B2A26
oklch(27% 0.022 176.2)
#406E64 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) | #6B6964 | 0.057 |
| Deuteranopia (no green cones) | #636365 | 0.054 |
| Tritanopia (no blue cones) | #306F6B | 0.016 |
| Achromatopsia (no color) | #666666 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #406E64
#406E64
oklch(50.2% 0.053 178.5)
- #7D5763
#7D5763
oklch(50.1% 0.053 358.6)
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 #406E64, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aquamarine #017371 ΔE 0.036
- Deep Turquoise #017374 ΔE 0.038
- Dark Aqua #05696B ΔE 0.044
- Slate #516572 ΔE 0.046
- Bluegreen #017A79 ΔE 0.046
- Deep Aqua #08787F ΔE 0.048
- Dark Green Blue #1F6357 ΔE 0.051
- Dim Gray #696969 ΔE 0.057
Use #406E64 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.