#646776
Closest named color: Dim Gray (#696969). oklch(51.7% 0.024 276.6), rgb(100, 103, 118).
Aa
White text reads best on this color (5.60:1).
About this color
#646776 is a medium-dark close to neutral grey. In OKLCH its lightness is 52%, its chroma 0.024. It has too little chroma to lean warm or cool. The nearest named color is Dim Gray (#696969), ΔE 0.024 away. White text reads best on it, at 5.60:1.
| Hue family | Neutrals |
| Lightness | medium-dark (52%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Dim Gray (#696969) |
| Black text | 3.74:1 |
| White text | 5.60:1 |
Values
| HEX | #646776 |
| RGB | rgb(100, 103, 118) |
| HSL | hsl(230, 8%, 43%) |
| OKLCH | oklch(51.7% 0.024 276.6) |
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 #646776 | 5.60:1 | AA | Lc -83.3 | Fine for body text |
| Black text on #646776 | 3.74:1 | AA large text | Lc 26.0 | Dividers and decoration only |
| #646776 text on white | 5.60:1 | AA | Lc 78.1 | Fine for body text |
| #646776 text on black | 3.74:1 | AA large text | Lc -23.7 | 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
#F5F5F6
oklch(97% 0.001 286.4)
-
Step 100
100
#E9EAEC
oklch(93.7% 0.003 264.5)
-
Step 200
200
#D8D9DD
oklch(88.6% 0.006 275)
-
Step 300
300
#BEC0C8
oklch(80.9% 0.011 274.9)
-
Step 400
400
#9DA0AC
oklch(70.7% 0.018 274.7)
-
Step 500
500
#858998
oklch(63.2% 0.023 273.8)
-
Step 600
600
#6F7283
oklch(55.5% 0.027 277.6)
-
Step 700
700 (this color)
#646776
oklch(51.7% 0.024 276.6)
-
Step 800
800
#4C4E5A
oklch(42.7% 0.02 278)
-
Step 900
900
#3F414A
oklch(37.7% 0.016 275.7)
-
Step 950
950
#25262B
oklch(27% 0.009 276.8)
#646776 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) | #636877 | 0.003 |
| Deuteranopia (no green cones) | #626776 | 0.003 |
| Tritanopia (no blue cones) | #606A6C | 0.022 |
| Achromatopsia (no color) | #686868 | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #646776
#646776
oklch(51.7% 0.024 276.6)
- #6C6859
#6C6859
oklch(51.6% 0.023 94.7)
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 #646776, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dim Gray #696969 ΔE 0.024
- Slate #516572 ΔE 0.029
- Battleship Gray #6C757D ΔE 0.043
- Metallic Blue #4F738E ΔE 0.048
- Dusty Grape #545775 ΔE 0.056
- Grey Purple #826D8C ΔE 0.062
- Battleship Grey #6B7C85 ΔE 0.062
- Dusty Purple #825F87 ΔE 0.063
Use #646776 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.