#603587
Closest named color: Rebecca Purple (#663399). oklch(42.3% 0.134 305.6), rgb(96, 53, 135).
Aa
White text reads best on this color (8.91:1).
About this color
#603587 is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.134 and its hue 306°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.032 away. White text reads best on it, at 8.91:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.134) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.35:1 |
| White text | 8.91:1 |
Values
| HEX | #603587 |
| RGB | rgb(96, 53, 135) |
| HSL | hsl(271, 44%, 37%) |
| OKLCH | oklch(42.3% 0.134 305.6) |
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 #603587 | 8.91:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #603587 | 2.35:1 | Fails | Lc 13.9 | Not readable |
| #603587 text on white | 8.91:1 | AAA | Lc 90.0 | Preferred for body text |
| #603587 text on black | 2.35:1 | Fails | Lc -12.2 | 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
#EDE6F6
oklch(93.5% 0.023 305.6)
-
Step 200
200
#E0D2F1
oklch(88.5% 0.045 305.9)
-
Step 300
300
#CDB4EA
oklch(80.9% 0.079 305.7)
-
Step 400
400
#B48BDF
oklch(70.7% 0.127 305.8)
-
Step 500
500
#A16CD6
oklch(63.1% 0.161 305.4)
-
Step 600
600
#8C51C3
oklch(55.6% 0.175 305.3)
-
Step 700
700
#7741A8
oklch(49.1% 0.162 305.4)
-
Step 800
800 (this color)
#603587
oklch(42.3% 0.134 305.6)
-
Step 900
900
#4F306D
oklch(37.7% 0.105 305.4)
-
Step 950
950
#2E1D40
oklch(27% 0.066 304.8)
#603587 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) | #11488A | 0.110 |
| Deuteranopia (no green cones) | #254A85 | 0.099 |
| Tritanopia (no blue cones) | #594559 | 0.097 |
| Achromatopsia (no color) | #4A4A4A | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #603587
#603587
oklch(42.3% 0.134 305.6)
- #405700
#405700
oklch(42.2% 0.107 125.3)
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 #603587, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.032
- Dark Slate Blue #483D8B ΔE 0.046
- Blueberry #464196 ΔE 0.056
- Twilight #4E518B ΔE 0.074
- Dusk #4E5481 ΔE 0.086
- Purple #800080 ΔE 0.087
- Chrysanthemum #560BAD ΔE 0.090
- Light Eggplant #894585 ΔE 0.093
Use #603587 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.