#603580
Closest named color: Rebecca Purple (#663399). oklch(41.8% 0.126 308.4), rgb(96, 53, 128).
Aa
White text reads best on this color (9.05:1).
About this color
#603580 is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.126 and its hue 308°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.043 away. White text reads best on it, at 9.05:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.126) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.31:1 |
| White text | 9.05:1 |
Values
| HEX | #603580 |
| RGB | rgb(96, 53, 128) |
| HSL | hsl(274, 41%, 35%) |
| OKLCH | oklch(41.8% 0.126 308.4) |
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 #603580 | 9.05:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #603580 | 2.31:1 | Fails | Lc 13.5 | Not readable |
| #603580 text on white | 9.05:1 | AAA | Lc 90.5 | Preferred for body text |
| #603580 text on black | 2.31:1 | Fails | Lc -11.8 | 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
#F7F4FB
oklch(97.1% 0.01 305.4)
-
Step 100
100
#EEE6F5
oklch(93.6% 0.022 309.6)
-
Step 200
200
#E1D2EE
oklch(88.4% 0.041 309.4)
-
Step 300
300
#CEB4E6
oklch(80.9% 0.075 308.3)
-
Step 400
400
#B58CD9
oklch(70.7% 0.118 308.1)
-
Step 500
500
#A36DCE
oklch(63.1% 0.15 308.4)
-
Step 600
600
#8E53BB
oklch(55.6% 0.163 308.2)
-
Step 700
700
#7943A1
oklch(49.1% 0.151 308.3)
-
Step 800
800 (this color)
#603580
oklch(41.8% 0.126 308.4)
-
Step 900
900
#503169
oklch(37.7% 0.098 307.9)
-
Step 950
950
#2F1D3D
oklch(27% 0.062 308.8)
#603580 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) | #1B4782 | 0.105 |
| Deuteranopia (no green cones) | #2B497E | 0.094 |
| Tritanopia (no blue cones) | #5B4355 | 0.090 |
| Achromatopsia (no color) | #494949 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #603580
#603580
oklch(41.8% 0.126 308.4)
- #3A5700
#3A5700
oklch(41.8% 0.11 128.5)
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 #603580, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.043
- Dark Slate Blue #483D8B ΔE 0.049
- Blueberry #464196 ΔE 0.062
- Twilight #4E518B ΔE 0.075
- Dusk #4E5481 ΔE 0.085
- Purple #800080 ΔE 0.087
- Light Eggplant #894585 ΔE 0.093
- Grape Purple #5D1451 ΔE 0.097
Use #603580 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.