#603CB3
Closest named color: Bluey Purple (#6241C7). oklch(46.7% 0.179 291.9), rgb(96, 60, 179).
Aa
White text reads best on this color (7.51:1).
About this color
#603CB3 is a medium-dark, vivid purple. In OKLCH its lightness is 47%, its chroma 0.179 and its hue 292°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Bluey Purple (#6241C7), ΔE 0.033 away. White text reads best on it, at 7.51:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.179) |
| Temperature | in between |
| Nearest name | Bluey Purple (#6241C7) |
| Black text | 2.79:1 |
| White text | 7.51:1 |
Values
| HEX | #603CB3 |
| RGB | rgb(96, 60, 179) |
| HSL | hsl(258, 50%, 47%) |
| OKLCH | oklch(46.7% 0.179 291.9) |
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 #603CB3 | 7.51:1 | AAA | Lc -90.4 | Preferred for body text |
| Black text on #603CB3 | 2.79:1 | Fails | Lc 18.5 | Dividers and decoration only |
| #603CB3 text on white | 7.51:1 | AAA | Lc 85.6 | Fine for body text |
| #603CB3 text on black | 2.79:1 | Fails | Lc -16.5 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#EAE7FA
oklch(93.6% 0.026 293.1)
-
Step 200
200
#D9D4F7
oklch(88.5% 0.048 291.9)
-
Step 300
300
#C1B7F4
oklch(80.9% 0.086 291.9)
-
Step 400
400
#A38FEF
oklch(70.7% 0.138 292.1)
-
Step 500
500
#8E70EA
oklch(63.1% 0.177 291.9)
-
Step 600
600
#7954D8
oklch(55.5% 0.193 291.8)
-
Step 700
700 (this color)
#603CB3
oklch(46.7% 0.179 291.9)
-
Step 800
800
#533997
oklch(42.7% 0.147 291.7)
-
Step 900
900
#443278
oklch(37.6% 0.115 291.8)
-
Step 950
950
#281E47
oklch(27% 0.074 292)
#603CB3 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) | #0056B7 | 0.104 |
| Deuteranopia (no green cones) | #0052B1 | 0.103 |
| Tritanopia (no blue cones) | #475972 | 0.143 |
| Achromatopsia (no color) | #545454 | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #603CB3
#603CB3
oklch(46.7% 0.179 291.9)
- #5C5F00
#5C5F00
oklch(46.7% 0.103 111.9)
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 #603CB3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Purple #6241C7 ΔE 0.033
- Blue With A Hint Of Purple #533CC6 ΔE 0.038
- Blurple #5539CC ΔE 0.045
- Rebecca Purple #663399 ΔE 0.047
- Purple Blue #5D21D0 ΔE 0.060
- Blueberry #464196 ΔE 0.064
- Iris #6258C4 ΔE 0.067
- Majorelle Blue #3F37C9 ΔE 0.068
Use #603CB3 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.