#503FD9
Closest named color: Blurple (#5539CC). oklch(49% 0.223 279.3), rgb(80, 63, 217).
Aa
White text reads best on this color (6.87:1).
About this color
#503FD9 is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.223 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Blurple (#5539CC), ΔE 0.025 away. White text reads best on it, at 6.87:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.223) |
| Temperature | cool |
| Nearest name | Blurple (#5539CC) |
| Black text | 3.05:1 |
| White text | 6.87:1 |
Values
| HEX | #503FD9 |
| RGB | rgb(80, 63, 217) |
| HSL | hsl(247, 67%, 55%) |
| OKLCH | oklch(49% 0.223 279.3) |
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 #503FD9 | 6.87:1 | AA | Lc -88.0 | Fine for body text |
| Black text on #503FD9 | 3.05:1 | AA large text | Lc 21.1 | Dividers and decoration only |
| #503FD9 text on white | 6.87:1 | AA | Lc 82.9 | Fine for body text |
| #503FD9 text on black | 3.05:1 | 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
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E5E8FF
oklch(93.6% 0.031 279.9)
-
Step 200
200
#D1D6FF
oklch(88.5% 0.057 279.7)
-
Step 300
300
#B3BAFF
oklch(80.8% 0.098 279.5)
-
Step 400
400
#8E93FF
oklch(70.6% 0.156 279.6)
-
Step 500
500
#7573FF
oklch(63% 0.202 279.5)
-
Step 600
600
#6051F9
oklch(55.6% 0.239 279.3)
-
Step 700
700 (this color)
#503FD9
oklch(49% 0.223 279.3)
-
Step 800
800
#4136AF
oklch(42.7% 0.184 279.3)
-
Step 900
900
#36318B
oklch(37.7% 0.144 279.4)
-
Step 950
950
#1F1E51
oklch(27% 0.091 279.3)
#503FD9 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) | #0060DE | 0.083 |
| Deuteranopia (no green cones) | #0054D6 | 0.070 |
| Tritanopia (no blue cones) | #006988 | 0.181 |
| Achromatopsia (no color) | #5A5A5A | 0.224 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #503FD9
#503FD9
oklch(49% 0.223 279.3)
- #6F6100
#6F6100
oklch(49.1% 0.102 99.4)
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 #503FD9, closest first.
No curated palette has a color within ΔE 0.04 of #503FD9.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blurple #5539CC ΔE 0.025
- Blue With A Hint Of Purple #533CC6 ΔE 0.031
- Purpley Blue #5F34E7 ΔE 0.033
- Majorelle Blue #3F37C9 ΔE 0.041
- Bluey Purple #6241C7 ΔE 0.042
- Burple #6832E3 ΔE 0.044
- Warm Blue #4B57DB ΔE 0.048
- Purple Blue #5D21D0 ΔE 0.050
Use #503FD9 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.