#3D646F
Closest named color: Slate (#516572). oklch(47.9% 0.047 217.7), rgb(61, 100, 111).
Aa
White text reads best on this color (6.45:1).
About this color
#3D646F is a medium-dark, muted teal or cyan. In OKLCH its lightness is 48%, its chroma 0.047 and its hue 218°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.026 away. White text reads best on it, at 6.45:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (48%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.25:1 |
| White text | 6.45:1 |
Values
| HEX | #3D646F |
| RGB | rgb(61, 100, 111) |
| HSL | hsl(193, 29%, 34%) |
| OKLCH | oklch(47.9% 0.047 217.7) |
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 #3D646F | 6.45:1 | AA | Lc -87.1 | Fine for body text |
| Black text on #3D646F | 3.25:1 | AA large text | Lc 22.1 | Dividers and decoration only |
| #3D646F text on white | 6.45:1 | AA | Lc 82.0 | Fine for body text |
| #3D646F text on black | 3.25:1 | AA large text | Lc -19.9 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBED
oklch(93.6% 0.007 219.6)
-
Step 200
200
#D0DBDF
oklch(88.4% 0.013 221.4)
-
Step 300
300
#B1C5CA
oklch(81% 0.023 214.4)
-
Step 400
400
#88A7B0
oklch(70.8% 0.037 217.3)
-
Step 500
500
#69919C
oklch(63.1% 0.047 216.6)
-
Step 600
600
#507B87
oklch(55.6% 0.051 217.3)
-
Step 700
700 (this color)
#3D646F
oklch(47.9% 0.047 217.7)
-
Step 800
800
#35545D
oklch(42.5% 0.039 218.1)
-
Step 900
900
#2F464C
oklch(37.8% 0.03 215.8)
-
Step 950
950
#1C292D
oklch(27.1% 0.019 218.7)
#3D646F 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) | #5D6270 | 0.042 |
| Deuteranopia (no green cones) | #555C6F | 0.037 |
| Tritanopia (no blue cones) | #276867 | 0.029 |
| Achromatopsia (no color) | #5E5E5E | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D646F
#3D646F
oklch(47.9% 0.047 217.7)
- #75544A
#75544A
oklch(47.8% 0.047 37.5)
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 #3D646F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.026
- YInMn Blue #415A77 ΔE 0.037
- Dark Aqua #05696B ΔE 0.039
- Petrol #005F6A ΔE 0.046
- Denim #3B638C ΔE 0.049
- Dark Green Blue #1F6357 ΔE 0.051
- Dusty Grape #545775 ΔE 0.051
- Deep Turquoise #017374 ΔE 0.052
Use #3D646F 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.