#64637A
Closest named color: Slate (#516572). oklch(50.9% 0.036 287), rgb(100, 99, 122).
Aa
White text reads best on this color (5.82:1).
About this color
#64637A is a medium-dark, muted purple. In OKLCH its lightness is 51%, its chroma 0.036 and its hue 287°. 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 5.82:1.
| Hue family | Purples |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.60:1 |
| White text | 5.82:1 |
Values
| HEX | #64637A |
| RGB | rgb(100, 99, 122) |
| HSL | hsl(243, 10%, 43%) |
| OKLCH | oklch(50.9% 0.036 287) |
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 #64637A | 5.82:1 | AA | Lc -84.4 | Fine for body text |
| Black text on #64637A | 3.60:1 | AA large text | Lc 24.9 | Dividers and decoration only |
| #64637A text on white | 5.82:1 | AA | Lc 79.1 | Fine for body text |
| #64637A text on black | 3.60:1 | AA large text | Lc -22.7 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E9E9ED
oklch(93.5% 0.005 286.3)
-
Step 200
200
#D8D8DF
oklch(88.4% 0.01 286.2)
-
Step 300
300
#BFBFCC
oklch(80.9% 0.018 286)
-
Step 400
400
#9F9EB2
oklch(70.7% 0.029 287.9)
-
Step 500
500
#87879F
oklch(63.2% 0.036 285.3)
-
Step 600
600
#717089
oklch(55.5% 0.038 286.9)
-
Step 700
700 (this color)
#64637A
oklch(50.9% 0.036 287)
-
Step 800
800
#4E4D5F
oklch(42.8% 0.03 287.6)
-
Step 900
900
#40404E
oklch(37.7% 0.024 285.2)
-
Step 950
950
#26252D
oklch(26.9% 0.015 291.1)
#64637A 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) | #5E667B | 0.012 |
| Deuteranopia (no green cones) | #5D6579 | 0.012 |
| Tritanopia (no blue cones) | #5F676B | 0.032 |
| Achromatopsia (no color) | #656565 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64637A
#64637A
oklch(50.9% 0.036 287)
- #686850
#686850
oklch(51% 0.036 107.6)
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 #64637A, 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 0.038
- Dusty Grape #545775 ΔE 0.045
- Metallic Blue #4F738E ΔE 0.052
- Battleship Gray #6C757D ΔE 0.055
- Dusty Purple #825F87 ΔE 0.056
- Muted Purple #805B87 ΔE 0.057
- Dull Purple #84597E ΔE 0.059
Use #64637A 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.