#3A646C
Closest named color: Slate (#516572). oklch(47.6% 0.049 211.1), rgb(58, 100, 108).
Aa
White text reads best on this color (6.52:1).
About this color
#3A646C is a medium-dark, muted teal or cyan. In OKLCH its lightness is 48%, its chroma 0.049 and its hue 211°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.031 away. White text reads best on it, at 6.52:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (48%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.21:1 |
| White text | 6.52:1 |
Values
| HEX | #3A646C |
| RGB | rgb(58, 100, 108) |
| HSL | hsl(190, 30%, 33%) |
| OKLCH | oklch(47.6% 0.049 211.1) |
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 #3A646C | 6.52:1 | AA | Lc -87.3 | Fine for body text |
| Black text on #3A646C | 3.21:1 | AA large text | Lc 21.8 | Dividers and decoration only |
| #3A646C text on white | 6.52:1 | AA | Lc 82.2 | Fine for body text |
| #3A646C text on black | 3.21:1 | AA large text | Lc -19.7 | 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
#E5EBEC
oklch(93.6% 0.007 208.8)
-
Step 200
200
#D0DCDE
oklch(88.6% 0.013 208.8)
-
Step 300
300
#B0C5C9
oklch(80.9% 0.024 210.4)
-
Step 400
400
#86A7AE
oklch(70.6% 0.038 212)
-
Step 500
500
#67929A
oklch(63.2% 0.048 210.4)
-
Step 600
600
#4E7C85
oklch(55.7% 0.052 211.3)
-
Step 700
700 (this color)
#3A646C
oklch(47.6% 0.049 211.1)
-
Step 800
800
#34555C
oklch(42.7% 0.04 212.5)
-
Step 900
900
#2E464B
oklch(37.7% 0.031 212.1)
-
Step 950
950
#1B292C
oklch(27% 0.02 212.4)
#3A646C 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) | #5D616D | 0.046 |
| Deuteranopia (no green cones) | #555B6C | 0.042 |
| Tritanopia (no blue cones) | #236866 | 0.027 |
| Achromatopsia (no color) | #5E5E5E | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A646C
#3A646C
oklch(47.6% 0.049 211.1)
- #75524C
#75524C
oklch(47.5% 0.048 29.9)
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 #3A646C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.031
- Dark Aqua #05696B ΔE 0.034
- YInMn Blue #415A77 ΔE 0.041
- Petrol #005F6A ΔE 0.042
- Dark Green Blue #1F6357 ΔE 0.045
- Deep Turquoise #017374 ΔE 0.049
- Dark Aquamarine #017371 ΔE 0.050
- Denim #3B638C ΔE 0.054
Use #3A646C 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.