#4B40DB
Closest named color: Blurple (#5539CC). oklch(49% 0.225 277.2), rgb(75, 64, 219).
Aa
White text reads best on this color (6.87:1).
About this color
#4B40DB is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.225 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Blurple (#5539CC), ΔE 0.031 away. White text reads best on it, at 6.87:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.225) |
| Temperature | cool |
| Nearest name | Blurple (#5539CC) |
| Black text | 3.05:1 |
| White text | 6.87:1 |
Values
| HEX | #4B40DB |
| RGB | rgb(75, 64, 219) |
| HSL | hsl(244, 68%, 55%) |
| OKLCH | oklch(49% 0.225 277.2) |
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 #4B40DB | 6.87:1 | AA | Lc -87.9 | Fine for body text |
| Black text on #4B40DB | 3.05:1 | AA large text | Lc 21.1 | Dividers and decoration only |
| #4B40DB text on white | 6.87:1 | AA | Lc 82.9 | Fine for body text |
| #4B40DB 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
#E4E8FF
oklch(93.5% 0.031 277.9)
-
Step 200
200
#CFD6FF
oklch(88.4% 0.057 277.5)
-
Step 300
300
#B1BBFF
oklch(80.9% 0.097 277.5)
-
Step 400
400
#8A95FF
oklch(70.7% 0.154 277.2)
-
Step 500
500
#7075FF
oklch(63.1% 0.201 277.4)
-
Step 600
600
#5A52FC
oklch(55.6% 0.243 277.1)
-
Step 700
700 (this color)
#4B40DB
oklch(49% 0.225 277.2)
-
Step 800
800
#3D37B1
oklch(42.7% 0.186 277.2)
-
Step 900
900
#33328C
oklch(37.7% 0.145 277.4)
-
Step 950
950
#1D1E52
oklch(26.9% 0.093 277.3)
#4B40DB 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) | #0061E0 | 0.079 |
| Deuteranopia (no green cones) | #0054D8 | 0.063 |
| Tritanopia (no blue cones) | #006B89 | 0.182 |
| Achromatopsia (no color) | #5A5A5A | 0.226 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B40DB
#4B40DB
oklch(49% 0.225 277.2)
- #716000
#716000
oklch(49.1% 0.101 97)
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 #4B40DB, closest first.
No curated palette has a color within ΔE 0.04 of #4B40DB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blurple #5539CC ΔE 0.031
- Blue With A Hint Of Purple #533CC6 ΔE 0.036
- Purpley Blue #5F34E7 ΔE 0.038
- Majorelle Blue #3F37C9 ΔE 0.040
- Warm Blue #4B57DB ΔE 0.047
- Bluey Purple #6241C7 ΔE 0.050
- Burple #6832E3 ΔE 0.050
- Purple Blue #5D21D0 ΔE 0.056
Use #4B40DB 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.