#636684
Closest named color: Slate (#516572). oklch(51.9% 0.047 280.1), rgb(99, 102, 132).
Aa
White text reads best on this color (5.57:1).
About this color
#636684 is a medium-dark, muted purple. In OKLCH its lightness is 52%, its chroma 0.047 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.040 away. White text reads best on it, at 5.57:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.76:1 |
| White text | 5.57:1 |
Values
| HEX | #636684 |
| RGB | rgb(99, 102, 132) |
| HSL | hsl(235, 14%, 45%) |
| OKLCH | oklch(51.9% 0.047 280.1) |
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 #636684 | 5.57:1 | AA | Lc -83.2 | Fine for body text |
| Black text on #636684 | 3.76:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #636684 text on white | 5.57:1 | AA | Lc 77.9 | Fine for body text |
| #636684 text on black | 3.76:1 | AA large text | Lc -23.9 | 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
#E9E9EE
oklch(93.5% 0.007 286.3)
-
Step 200
200
#D7D8E2
oklch(88.4% 0.014 281.5)
-
Step 300
300
#BDBFD0
oklch(80.8% 0.024 280.5)
-
Step 400
400
#9C9FB8
oklch(70.8% 0.036 280)
-
Step 500
500
#8387A6
oklch(63.1% 0.047 279.2)
-
Step 600
600
#6D7091
oklch(55.5% 0.051 280.5)
-
Step 700
700 (this color)
#636684
oklch(51.9% 0.047 280.1)
-
Step 800
800
#4A4D64
oklch(42.7% 0.038 278.8)
-
Step 900
900
#3E4052
oklch(37.7% 0.031 279.8)
-
Step 950
950
#242630
oklch(27.1% 0.019 276.2)
#636684 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) | #5E6985 | 0.010 |
| Deuteranopia (no green cones) | #5C6783 | 0.011 |
| Tritanopia (no blue cones) | #5B6B70 | 0.042 |
| Achromatopsia (no color) | #686868 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #636684
#636684
oklch(51.9% 0.047 280.1)
- #6F6A4A
#6F6A4A
oklch(52% 0.047 100.3)
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 #636684, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.040
- Metallic Blue #4F738E ΔE 0.042
- Dim Gray #696969 ΔE 0.047
- Battleship Gray #6C757D ΔE 0.052
- Dusty Purple #825F87 ΔE 0.053
- Dusty Grape #545775 ΔE 0.053
- Dusky Blue #475F94 ΔE 0.054
- Dull Blue #49759C ΔE 0.055
Use #636684 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.