#603CA4
Closest named color: Rebecca Purple (#663399). oklch(45.5% 0.16 295.2), rgb(96, 60, 164).
Aa
White text reads best on this color (7.83:1).
About this color
#603CA4 is a medium-dark, vivid purple. In OKLCH its lightness is 45%, its chroma 0.160 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.027 away. White text reads best on it, at 7.83:1.
| Hue family | Purples |
| Lightness | medium-dark (45%) |
| Chroma | vivid (0.160) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.67:1 |
| White text | 7.83:1 |
Values
| HEX | #603CA4 |
| RGB | rgb(96, 60, 164) |
| HSL | hsl(261, 46%, 44%) |
| OKLCH | oklch(45.5% 0.16 295.2) |
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 #603CA4 | 7.83:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #603CA4 | 2.67:1 | Fails | Lc 17.3 | Dividers and decoration only |
| #603CA4 text on white | 7.83:1 | AAA | Lc 86.8 | Fine for body text |
| #603CA4 text on black | 2.67:1 | Fails | Lc -15.3 | 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 800.
-
Step 50
50
#F6F4FD
oklch(97.1% 0.012 296.4)
-
Step 100
100
#EBE7FB
oklch(93.7% 0.027 295)
-
Step 200
200
#DBD3F9
oklch(88.5% 0.052 295)
-
Step 300
300
#C5B5F7
oklch(80.9% 0.093 295.4)
-
Step 400
400
#A88BF3
oklch(70.6% 0.15 295.1)
-
Step 500
500
#956AEE
oklch(63.1% 0.191 295.4)
-
Step 600
600
#814DDD
oklch(55.6% 0.208 295.4)
-
Step 700
700
#6D3DC0
oklch(49.2% 0.193 295.1)
-
Step 800
800 (this color)
#603CA4
oklch(45.5% 0.16 295.2)
-
Step 900
900
#482F7B
oklch(37.7% 0.124 294.9)
-
Step 950
950
#2A1C48
oklch(26.9% 0.079 295.3)
#603CA4 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) | #0053A7 | 0.106 |
| Deuteranopia (no green cones) | #0050A2 | 0.106 |
| Tritanopia (no blue cones) | #4E546A | 0.127 |
| Achromatopsia (no color) | #525252 | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #603CA4
#603CA4
oklch(45.5% 0.16 295.2)
- #555D00
#555D00
oklch(45.6% 0.104 115.4)
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 #603CA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.027
- Blueberry #464196 ΔE 0.050
- Bluey Purple #6241C7 ΔE 0.057
- Dark Slate Blue #483D8B ΔE 0.058
- Blue With A Hint Of Purple #533CC6 ΔE 0.060
- Blurple #5539CC ΔE 0.068
- Twilight #4E518B ΔE 0.074
- Grape #7209B7 ΔE 0.075
Use #603CA4 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.