#603FA5
Closest named color: Rebecca Purple (#663399). oklch(46% 0.157 294.3), rgb(96, 63, 165).
Aa
White text reads best on this color (7.63:1).
About this color
#603FA5 is a medium-dark, vivid purple. In OKLCH its lightness is 46%, its chroma 0.157 and its hue 294°. 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 7.63:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.157) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.75:1 |
| White text | 7.63:1 |
Values
| HEX | #603FA5 |
| RGB | rgb(96, 63, 165) |
| HSL | hsl(259, 45%, 45%) |
| OKLCH | oklch(46% 0.157 294.3) |
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 #603FA5 | 7.63:1 | AAA | Lc -90.9 | Preferred for body text |
| Black text on #603FA5 | 2.75:1 | Fails | Lc 17.9 | Dividers and decoration only |
| #603FA5 text on white | 7.63:1 | AAA | Lc 86.1 | Fine for body text |
| #603FA5 text on black | 2.75:1 | Fails | Lc -15.9 | 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 700.
-
Step 50
50
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#EAE7F8
oklch(93.5% 0.023 294.1)
-
Step 200
200
#DAD4F3
oklch(88.4% 0.043 294.4)
-
Step 300
300
#C3B8ED
oklch(81% 0.075 294.2)
-
Step 400
400
#A591E5
oklch(70.7% 0.122 294)
-
Step 500
500
#9073DD
oklch(63% 0.156 294.1)
-
Step 600
600
#7C59CA
oklch(55.6% 0.169 294.6)
-
Step 700
700 (this color)
#603FA5
oklch(46% 0.157 294.3)
-
Step 800
800
#553C8E
oklch(42.7% 0.13 294.3)
-
Step 900
900
#463471
oklch(37.7% 0.101 294.6)
-
Step 950
950
#291F42
oklch(27% 0.064 294.9)
#603FA5 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) | #0055A8 | 0.104 |
| Deuteranopia (no green cones) | #0052A3 | 0.103 |
| Tritanopia (no blue cones) | #4E566C | 0.124 |
| Achromatopsia (no color) | #545454 | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #603FA5
#603FA5
oklch(46% 0.157 294.3)
- #585E00
#585E00
oklch(46.1% 0.104 114)
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 #603FA5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.032
- Blueberry #464196 ΔE 0.050
- Bluey Purple #6241C7 ΔE 0.054
- Blue With A Hint Of Purple #533CC6 ΔE 0.059
- Dark Slate Blue #483D8B ΔE 0.060
- Blurple #5539CC ΔE 0.067
- Twilight #4E518B ΔE 0.070
- Iris #6258C4 ΔE 0.073
Use #603FA5 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.