#645196
Closest named color: Twilight (#4E518B). oklch(48.6% 0.109 294.7), rgb(100, 81, 150).
Aa
White text reads best on this color (6.64:1).
About this color
#645196 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 49%, its chroma 0.109 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.040 away. White text reads best on it, at 6.64:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.109) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.15:1 |
| White text | 6.64:1 |
Values
| HEX | #645196 |
| RGB | rgb(100, 81, 150) |
| HSL | hsl(257, 30%, 45%) |
| OKLCH | oklch(48.6% 0.109 294.7) |
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 #645196 | 6.64:1 | AA | Lc -87.8 | Fine for body text |
| Black text on #645196 | 3.15:1 | AA large text | Lc 21.3 | Dividers and decoration only |
| #645196 text on white | 6.64:1 | AA | Lc 82.7 | Fine for body text |
| #645196 text on black | 3.15:1 | AA large text | Lc -19.2 | 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
#F6F5FA
oklch(97.2% 0.007 295.5)
-
Step 100
100
#EAE8F3
oklch(93.6% 0.015 294.5)
-
Step 200
200
#DAD6EB
oklch(88.6% 0.029 294.5)
-
Step 300
300
#C2BBE0
oklch(81% 0.052 293.9)
-
Step 400
400
#A496D0
oklch(70.6% 0.085 295.2)
-
Step 500
500
#8E7CC4
oklch(63.2% 0.108 294.6)
-
Step 600
600
#7864B0
oklch(55.6% 0.116 294.4)
-
Step 700
700 (this color)
#645196
oklch(48.6% 0.109 294.7)
-
Step 800
800
#53447B
oklch(42.8% 0.09 294.9)
-
Step 900
900
#443963
oklch(37.6% 0.071 294.8)
-
Step 950
950
#28223A
oklch(27.1% 0.044 294.7)
#645196 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) | #3B5D99 | 0.062 |
| Deuteranopia (no green cones) | #3E5B94 | 0.059 |
| Tritanopia (no blue cones) | #595E6C | 0.088 |
| Achromatopsia (no color) | #5C5C5C | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645196
#645196
oklch(48.6% 0.109 294.7)
- #5E6602
#5E6602
oklch(48.7% 0.109 115)
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 #645196, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.040
- Dusk #4E5481 ΔE 0.051
- Dusky Blue #475F94 ΔE 0.055
- Denim Blue #3B5B92 ΔE 0.063
- Muted Purple #805B87 ΔE 0.065
- Dusty Grape #545775 ΔE 0.066
- Blueberry #464196 ΔE 0.069
- Rebecca Purple #663399 ΔE 0.072
Use #645196 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.