#63647C
Closest named color: Slate (#516572). oklch(51.1% 0.038 283.1), rgb(99, 100, 124).
Aa
White text reads best on this color (5.76:1).
About this color
#63647C is a medium-dark, muted purple. In OKLCH its lightness is 51%, its chroma 0.038 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.032 away. White text reads best on it, at 5.76:1.
| Hue family | Purples |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.64:1 |
| White text | 5.76:1 |
Values
| HEX | #63647C |
| RGB | rgb(99, 100, 124) |
| HSL | hsl(238, 11%, 44%) |
| OKLCH | oklch(51.1% 0.038 283.1) |
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 #63647C | 5.76:1 | AA | Lc -84.1 | Fine for body text |
| Black text on #63647C | 3.64:1 | AA large text | Lc 25.2 | Dividers and decoration only |
| #63647C text on white | 5.76:1 | AA | Lc 78.8 | Fine for body text |
| #63647C text on black | 3.64:1 | AA large text | Lc -23.0 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E9E9ED
oklch(93.5% 0.005 286.3)
-
Step 200
200
#D8D8E0
oklch(88.5% 0.011 286.2)
-
Step 300
300
#BEBFCC
oklch(80.8% 0.018 282.5)
-
Step 400
400
#9E9FB3
oklch(70.8% 0.029 283.4)
-
Step 500
500
#8687A0
oklch(63.1% 0.037 283.5)
-
Step 600
600
#70718B
oklch(55.7% 0.04 283.3)
-
Step 700
700 (this color)
#63647C
oklch(51.1% 0.038 283.1)
-
Step 800
800
#4C4D60
oklch(42.7% 0.031 282.6)
-
Step 900
900
#3F404E
oklch(37.6% 0.024 282)
-
Step 950
950
#25262E
oklch(27.1% 0.015 279.7)
#63647C 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) | #5E677D | 0.011 |
| Deuteranopia (no green cones) | #5D657B | 0.010 |
| Tritanopia (no blue cones) | #5E686C | 0.033 |
| Achromatopsia (no color) | #666666 | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63647C
#63647C
oklch(51.1% 0.038 283.1)
- #6A684F
#6A684F
oklch(51.2% 0.038 103.8)
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 #63647C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.032
- Dim Gray #696969 ΔE 0.039
- Dusty Grape #545775 ΔE 0.046
- Metallic Blue #4F738E ΔE 0.048
- Battleship Gray #6C757D ΔE 0.053
- Dusty Purple #825F87 ΔE 0.056
- Denim #3B638C ΔE 0.057
- Muted Purple #805B87 ΔE 0.058
Use #63647C 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.