#646358
Closest named color: Dim Gray (#696969). oklch(49.7% 0.017 102.8), rgb(100, 99, 88).
Aa
White text reads best on this color (6.05:1).
About this color
#646358 is a medium-dark close to neutral grey. In OKLCH its lightness is 50%, its chroma 0.017. It has too little chroma to lean warm or cool. The nearest named color is Dim Gray (#696969), ΔE 0.029 away. White text reads best on it, at 6.05:1.
| Hue family | Neutrals |
| Lightness | medium-dark (50%) |
| Chroma | close to neutral grey (0.017) |
| Temperature | neutral |
| Nearest name | Dim Gray (#696969) |
| Black text | 3.46:1 |
| White text | 6.05:1 |
Values
| HEX | #646358 |
| RGB | rgb(100, 99, 88) |
| HSL | hsl(55, 6%, 37%) |
| OKLCH | oklch(49.7% 0.017 102.8) |
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 #646358 | 6.05:1 | AA | Lc -85.5 | Fine for body text |
| Black text on #646358 | 3.46:1 | AA large text | Lc 23.8 | Dividers and decoration only |
| #646358 text on white | 6.05:1 | AA | Lc 80.3 | Fine for body text |
| #646358 text on black | 3.46:1 | AA large text | Lc -21.6 | 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
#F5F5F5
oklch(97% 0 0)
-
Step 100
100
#EAEAE8
oklch(93.6% 0.003 106.5)
-
Step 200
200
#D9D9D6
oklch(88.4% 0.004 106.5)
-
Step 300
300
#C1C1BB
oklch(80.9% 0.008 106.6)
-
Step 400
400
#A2A198
oklch(70.7% 0.013 101.6)
-
Step 500
500
#8B8A7F
oklch(63.1% 0.016 102.6)
-
Step 600
600
#757468
oklch(55.6% 0.018 103.1)
-
Step 700
700 (this color)
#646358
oklch(49.7% 0.017 102.8)
-
Step 800
800
#504F47
oklch(42.6% 0.013 101.1)
-
Step 900
900
#42423B
oklch(37.7% 0.012 106.9)
-
Step 950
950
#272723
oklch(27.1% 0.007 106.9)
#646358 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) | #656257 | 0.003 |
| Deuteranopia (no green cones) | #666358 | 0.003 |
| Tritanopia (no blue cones) | #666160 | 0.016 |
| Achromatopsia (no color) | #626262 | 0.017 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #646358
#646358
oklch(49.7% 0.017 102.8)
- #61616C
#61616C
oklch(49.6% 0.017 285.8)
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 #646358, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dim Gray #696969 ΔE 0.029
- Slate #516572 ΔE 0.045
- Dark Taupe #7F684E ΔE 0.050
- Dark Moss Green #606C38 ΔE 0.061
- Cocoa #875F42 ΔE 0.061
- Grey Brown #7F7053 ΔE 0.062
- Dirt Brown #836539 ΔE 0.065
- Battleship Gray #6C757D ΔE 0.068
Use #646358 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.