#603FCB
Closest named color: Bluey Purple (#6241C7). oklch(49.1% 0.204 287.1), rgb(96, 63, 203).
Aa
White text reads best on this color (6.83:1).
About this color
#603FCB is a medium-dark, vivid purple. In OKLCH its lightness is 49%, its chroma 0.204 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Bluey Purple (#6241C7), ΔE 0.008 away. White text reads best on it, at 6.83:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.204) |
| Temperature | cool |
| Nearest name | Bluey Purple (#6241C7) |
| Black text | 3.07:1 |
| White text | 6.83:1 |
Values
| HEX | #603FCB |
| RGB | rgb(96, 63, 203) |
| HSL | hsl(254, 57%, 52%) |
| OKLCH | oklch(49.1% 0.204 287.1) |
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 #603FCB | 6.83:1 | AA | Lc -88.0 | Fine for body text |
| Black text on #603FCB | 3.07:1 | AA large text | Lc 21.1 | Dividers and decoration only |
| #603FCB text on white | 6.83:1 | AA | Lc 82.9 | Fine for body text |
| #603FCB text on black | 3.07:1 | AA large text | Lc -19.0 | 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
#F4F4FE
oklch(97% 0.013 286.1)
-
Step 100
100
#E8E7FD
oklch(93.5% 0.03 287.9)
-
Step 200
200
#D6D4FC
oklch(88.4% 0.055 287.5)
-
Step 300
300
#BCB7FE
oklch(80.9% 0.1 287.2)
-
Step 400
400
#9C8EFD
oklch(70.7% 0.159 287.4)
-
Step 500
500
#866DFA
oklch(63% 0.202 287.3)
-
Step 600
600
#7250E9
oklch(55.6% 0.219 287.2)
-
Step 700
700 (this color)
#603FCB
oklch(49.1% 0.204 287.1)
-
Step 800
800
#4E35A4
oklch(42.6% 0.169 287.3)
-
Step 900
900
#403082
oklch(37.6% 0.132 287.3)
-
Step 950
950
#251D4C
oklch(26.9% 0.083 287.2)
#603FCB 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) | #005ECF | 0.100 |
| Deuteranopia (no green cones) | #0057C8 | 0.096 |
| Tritanopia (no blue cones) | #366380 | 0.167 |
| Achromatopsia (no color) | #5B5B5B | 0.205 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #603FCB
#603FCB
oklch(49.1% 0.204 287.1)
- #686400
#686400
oklch(49.1% 0.105 107)
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 #603FCB, closest first.
No curated palette has a color within ΔE 0.04 of #603FCB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Purple #6241C7 ΔE 0.008
- Blurple #5539CC ΔE 0.023
- Blue With A Hint Of Purple #533CC6 ΔE 0.025
- Burple #6832E3 ΔE 0.042
- Purpley Blue #5F34E7 ΔE 0.046
- Purple Blue #5D21D0 ΔE 0.046
- Iris #6258C4 ΔE 0.056
- Majorelle Blue #3F37C9 ΔE 0.058
Use #603FCB 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.