#646859
Closest named color: Dim Gray (#696969). oklch(50.9% 0.024 119.4), rgb(100, 104, 89).
Aa
White text reads best on this color (5.72:1).
About this color
#646859 is a medium-dark close to neutral grey. In OKLCH its lightness is 51%, its chroma 0.024. It has too little chroma to lean warm or cool. The nearest named color is Dim Gray (#696969), ΔE 0.026 away. White text reads best on it, at 5.72:1.
| Hue family | Neutrals |
| Lightness | medium-dark (51%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Dim Gray (#696969) |
| Black text | 3.66:1 |
| White text | 5.72:1 |
Values
| HEX | #646859 |
| RGB | rgb(100, 104, 89) |
| HSL | hsl(76, 8%, 38%) |
| OKLCH | oklch(50.9% 0.024 119.4) |
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 #646859 | 5.72:1 | AA | Lc -83.9 | Fine for body text |
| Black text on #646859 | 3.66:1 | AA large text | Lc 25.4 | Dividers and decoration only |
| #646859 text on white | 5.72:1 | AA | Lc 78.7 | Fine for body text |
| #646859 text on black | 3.66:1 | AA large text | Lc -23.1 | 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
#F5F5F4
oklch(97% 0.001 106.4)
-
Step 100
100
#E9EAE8
oklch(93.6% 0.003 128.5)
-
Step 200
200
#D8DAD5
oklch(88.5% 0.007 124.5)
-
Step 300
300
#BFC2BA
oklch(80.9% 0.012 123.5)
-
Step 400
400
#9FA296
oklch(70.6% 0.017 118.3)
-
Step 500
500
#878C7C
oklch(63.1% 0.024 121.2)
-
Step 600
600
#717665
oklch(55.6% 0.026 120.6)
-
Step 700
700 (this color)
#646859
oklch(50.9% 0.024 119.4)
-
Step 800
800
#4D5145
oklch(42.7% 0.02 122.3)
-
Step 900
900
#40433A
oklch(37.7% 0.015 122.2)
-
Step 950
950
#262722
oklch(27% 0.009 116.2)
#646859 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) | #6A6658 | 0.010 |
| Deuteranopia (no green cones) | #6A665A | 0.011 |
| Tritanopia (no blue cones) | #666664 | 0.021 |
| Achromatopsia (no color) | #666666 | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #646859
#646859
oklch(50.9% 0.024 119.4)
- #686372
#686372
oklch(51% 0.024 300.7)
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 #646859, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dim Gray #696969 ΔE 0.026
- Dark Taupe #7F684E ΔE 0.044
- Slate #516572 ΔE 0.050
- Grey Brown #7F7053 ΔE 0.052
- Dark Moss Green #606C38 ΔE 0.053
- Dirt Brown #836539 ΔE 0.060
- Battleship Gray #6C757D ΔE 0.060
- Cocoa #875F42 ΔE 0.061
Use #646859 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.