#645E87
Closest named color: Dusty Grape (#545775). oklch(50.4% 0.065 290.6), rgb(100, 94, 135).
Aa
White text reads best on this color (6.01:1).
About this color
#645E87 is a medium-dark, muted purple. In OKLCH its lightness is 50%, its chroma 0.065 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusty Grape (#545775), ΔE 0.042 away. White text reads best on it, at 6.01:1.
| Hue family | Purples |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.065) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 3.49:1 |
| White text | 6.01:1 |
Values
| HEX | #645E87 |
| RGB | rgb(100, 94, 135) |
| HSL | hsl(249, 18%, 45%) |
| OKLCH | oklch(50.4% 0.065 290.6) |
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 #645E87 | 6.01:1 | AA | Lc -85.2 | Fine for body text |
| Black text on #645E87 | 3.49:1 | AA large text | Lc 24.0 | Dividers and decoration only |
| #645E87 text on white | 6.01:1 | AA | Lc 80.0 | Fine for body text |
| #645E87 text on black | 3.49:1 | AA large text | Lc -21.8 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E9E9F0
oklch(93.6% 0.009 286.2)
-
Step 200
200
#D9D7E4
oklch(88.5% 0.018 293.1)
-
Step 300
300
#C0BED4
oklch(81% 0.031 289.9)
-
Step 400
400
#A09CBE
oklch(70.8% 0.049 290.5)
-
Step 500
500
#8983AE
oklch(63.1% 0.064 290.8)
-
Step 600
600
#736C99
oklch(55.5% 0.069 291.1)
-
Step 700
700 (this color)
#645E87
oklch(50.4% 0.065 290.6)
-
Step 800
800
#4F4A6A
oklch(42.7% 0.053 291.2)
-
Step 900
900
#413E56
oklch(37.7% 0.041 290)
-
Step 950
950
#262433
oklch(26.9% 0.028 290.5)
#645E87 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) | #546489 | 0.027 |
| Deuteranopia (no green cones) | #546286 | 0.026 |
| Tritanopia (no blue cones) | #5C656D | 0.054 |
| Achromatopsia (no color) | #636363 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645E87
#645E87
oklch(50.4% 0.065 290.6)
- #66683B
#66683B
oklch(50.4% 0.065 110.7)
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 #645E87, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.042
- Dusky Blue #475F94 ΔE 0.045
- Muted Purple #805B87 ΔE 0.047
- Dusk #4E5481 ΔE 0.047
- Dusty Purple #825F87 ΔE 0.050
- Slate #516572 ΔE 0.053
- Denim #3B638C ΔE 0.054
- Dull Purple #84597E ΔE 0.055
Use #645E87 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.