#3A494E
Closest named color: Dark Slate Gray (#2F4F4F). oklch(39.4% 0.021 220.1), rgb(58, 73, 78).
Aa
White text reads best on this color (9.36:1).
About this color
#3A494E is a dark close to neutral grey. In OKLCH its lightness is 39%, its chroma 0.021. It has too little chroma to lean warm or cool. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.022 away. White text reads best on it, at 9.36:1.
| Hue family | Neutrals |
| Lightness | dark (39%) |
| Chroma | close to neutral grey (0.021) |
| Temperature | neutral |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.24:1 |
| White text | 9.36:1 |
Values
| HEX | #3A494E |
| RGB | rgb(58, 73, 78) |
| HSL | hsl(195, 15%, 27%) |
| OKLCH | oklch(39.4% 0.021 220.1) |
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 #3A494E | 9.36:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #3A494E | 2.24:1 | Fails | Lc 12.3 | Not readable |
| #3A494E text on white | 9.36:1 | AAA | Lc 91.6 | Preferred for body text |
| #3A494E text on black | 2.24:1 | Fails | Lc -10.7 | Not readable |
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 900.
-
Step 50
50
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E7EBEC
oklch(93.7% 0.005 214.3)
-
Step 200
200
#D3DBDD
oklch(88.6% 0.009 214.3)
-
Step 300
300
#B6C3C8
oklch(80.9% 0.016 222.7)
-
Step 400
400
#90A5AB
oklch(70.8% 0.025 216.8)
-
Step 500
500
#758E97
oklch(63% 0.032 221.7)
-
Step 600
600
#5D7882
oklch(55.5% 0.035 222.5)
-
Step 700
700
#4C656E
oklch(49% 0.033 222)
-
Step 800
800
#3F5359
oklch(42.8% 0.027 218.1)
-
Step 900
900 (this color)
#3A494E
oklch(39.4% 0.021 220.1)
-
Step 950
950
#1F282B
oklch(26.9% 0.014 220.1)
#3A494E 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) | #46484E | 0.018 |
| Deuteranopia (no green cones) | #43454E | 0.018 |
| Tritanopia (no blue cones) | #344B4B | 0.013 |
| Achromatopsia (no color) | #474747 | 0.021 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A494E
#3A494E
oklch(39.4% 0.021 220.1)
- #51433E
#51433E
oklch(39.6% 0.021 40.6)
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 #3A494E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.022
- Charcoal Grey #3C4142 ΔE 0.027
- Charcoal #264653 ΔE 0.030
- Dark Grey Blue #29465B ΔE 0.034
- Dark Teal #014D4E ΔE 0.048
- Onyx #343A40 ΔE 0.050
- Deep Teal #00555A ΔE 0.052
- Dark Blue Green #005249 ΔE 0.055
Use #3A494E 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.