#603576
Closest named color: Dark Slate Blue (#483D8B). oklch(41.2% 0.114 313), rgb(96, 53, 118).
Aa
White text reads best on this color (9.25:1).
About this color
#603576 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.114 and its hue 313°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.057 away. White text reads best on it, at 9.25:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.114) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.26:1 |
| White text | 9.25:1 |
Values
| HEX | #603576 |
| RGB | rgb(96, 53, 118) |
| HSL | hsl(280, 38%, 34%) |
| OKLCH | oklch(41.2% 0.114 313) |
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 #603576 | 9.25:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #603576 | 2.26:1 | Fails | Lc 12.9 | Not readable |
| #603576 text on white | 9.25:1 | AAA | Lc 91.1 | Preferred for body text |
| #603576 text on black | 2.26:1 | Fails | Lc -11.3 | 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
#F7F4FA
oklch(97.1% 0.009 308.4)
-
Step 100
100
#EEE6F3
oklch(93.5% 0.019 312.8)
-
Step 200
200
#E2D2EB
oklch(88.4% 0.038 313.6)
-
Step 300
300
#D0B5E0
oklch(81% 0.066 312.9)
-
Step 400
400
#B88DD0
oklch(70.8% 0.106 313)
-
Step 500
500
#A66FC3
oklch(63.1% 0.135 313.2)
-
Step 600
600
#9155B0
oklch(55.6% 0.148 313)
-
Step 700
700
#7B4597
oklch(49.1% 0.137 312.8)
-
Step 800
800 (this color)
#603576
oklch(41.2% 0.114 313)
-
Step 900
900
#523263
oklch(37.8% 0.089 312.9)
-
Step 950
950
#301E3A
oklch(27.1% 0.055 312.7)
#603576 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) | #254578 | 0.097 |
| Deuteranopia (no green cones) | #324874 | 0.087 |
| Tritanopia (no blue cones) | #5E4050 | 0.078 |
| Achromatopsia (no color) | #474747 | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #603576
#603576
oklch(41.2% 0.114 313)
- #315704
#315704
oklch(41.2% 0.113 132.8)
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 #603576, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.057
- Rebecca Purple #663399 ΔE 0.059
- Blueberry #464196 ΔE 0.072
- Twilight #4E518B ΔE 0.078
- Dusk #4E5481 ΔE 0.084
- Grape Purple #5D1451 ΔE 0.086
- Purple #800080 ΔE 0.090
- Rich Purple #720058 ΔE 0.091
Use #603576 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.