#673581
Closest named color: Rebecca Purple (#663399). oklch(42.8% 0.13 312.6), rgb(103, 53, 129).
Aa
White text reads best on this color (8.73:1).
About this color
#673581 is a dark, moderately saturated purple. In OKLCH its lightness is 43%, its chroma 0.130 and its hue 313°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.040 away. White text reads best on it, at 8.73:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.130) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.40:1 |
| White text | 8.73:1 |
Values
| HEX | #673581 |
| RGB | rgb(103, 53, 129) |
| HSL | hsl(279, 42%, 36%) |
| OKLCH | oklch(42.8% 0.13 312.6) |
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 #673581 | 8.73:1 | AAA | Lc -94.1 | Preferred for body text |
| Black text on #673581 | 2.40:1 | Fails | Lc 14.4 | Not readable |
| #673581 text on white | 8.73:1 | AAA | Lc 89.5 | Fine for body text |
| #673581 text on black | 2.40:1 | Fails | Lc -12.7 | Not readable |
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 800.
-
Step 50
50
#F8F4FA
oklch(97.2% 0.009 314.8)
-
Step 100
100
#EFE6F5
oklch(93.6% 0.022 312.2)
-
Step 200
200
#E3D2EE
oklch(88.6% 0.042 312.3)
-
Step 300
300
#D2B3E4
oklch(81% 0.075 313)
-
Step 400
400
#BA89D7
oklch(70.6% 0.122 312.3)
-
Step 500
500
#A96ACC
oklch(63.1% 0.155 312.4)
-
Step 600
600
#944FB8
oklch(55.5% 0.168 312.5)
-
Step 700
700
#7E3F9F
oklch(49% 0.157 312.3)
-
Step 800
800 (this color)
#673581
oklch(42.8% 0.13 312.6)
-
Step 900
900
#542F67
oklch(37.7% 0.1 313)
-
Step 950
950
#311C3D
oklch(27% 0.065 312.1)
#673581 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) | #1E4883 | 0.114 |
| Deuteranopia (no green cones) | #314C7F | 0.101 |
| Tritanopia (no blue cones) | #644256 | 0.087 |
| Achromatopsia (no color) | #4B4B4B | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #673581
#673581
oklch(42.8% 0.13 312.6)
- #345C00
#345C00
oklch(42.8% 0.12 132.5)
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 #673581, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.040
- Dark Slate Blue #483D8B ΔE 0.060
- Blueberry #464196 ΔE 0.071
- Purple #800080 ΔE 0.078
- Twilight #4E518B ΔE 0.079
- Light Eggplant #894585 ΔE 0.080
- Dusk #4E5481 ΔE 0.088
- Dark Magenta #8B008B ΔE 0.090
Use #673581 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.