#550AFF
Closest named color: Blue Purple (#5A06EF). oklch(49.2% 0.294 279.8), rgb(85, 10, 255).
Aa
White text reads best on this color (7.30:1).
About this color
#550AFF is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.294 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Purple (#5A06EF), ΔE 0.028 away. White text reads best on it, at 7.30:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.294) |
| Temperature | cool |
| Nearest name | Blue Purple (#5A06EF) |
| Black text | 2.87:1 |
| White text | 7.30:1 |
Values
| HEX | #550AFF |
| RGB | rgb(85, 10, 255) |
| HSL | hsl(258, 100%, 52%) |
| OKLCH | oklch(49.2% 0.294 279.8) |
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 #550AFF | 7.30:1 | AAA | Lc -87.9 | Fine for body text |
| Black text on #550AFF | 2.87:1 | Fails | Lc 21.2 | Dividers and decoration only |
| #550AFF text on white | 7.30:1 | AAA | Lc 82.8 | Fine for body text |
| #550AFF text on black | 2.87:1 | Fails | Lc -19.1 | 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
#B4BAFF
oklch(80.9% 0.098 280.1)
-
Step 400
400
#8F93FF
oklch(70.7% 0.156 280)
-
Step 500
500
#7673FF
oklch(63.1% 0.202 279.9)
-
Step 600
600
#614CFF
oklch(55.5% 0.251 279.7)
-
Step 700
700 (this color)
#550AFF
oklch(49.2% 0.294 279.8)
-
Step 800
800
#4417CD
oklch(42.6% 0.243 279.8)
-
Step 900
900
#3722A1
oklch(37.7% 0.189 279.8)
-
Step 950
950
#1F175E
oklch(26.9% 0.12 279.8)
#550AFF 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) | #005EFF | 0.111 |
| Deuteranopia (no green cones) | #004DFB | 0.090 |
| Tritanopia (no blue cones) | #006A96 | 0.229 |
| Achromatopsia (no color) | #565656 | 0.296 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #550AFF
#550AFF
oklch(49.2% 0.294 279.8)
- #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 #550AFF, closest first.
No curated palette has a color within ΔE 0.04 of #550AFF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Purple #5A06EF ΔE 0.028
- Light Royal Blue #3A2EFE ΔE 0.043
- Purply Blue #661AEE ΔE 0.044
- Purpley Blue #5F34E7 ΔE 0.052
- Burple #6832E3 ΔE 0.065
- Vivid Blue #152EFF ΔE 0.073
- Purple Blue #5D21D0 ΔE 0.076
- Vibrant Blue #0339F8 ΔE 0.080
Use #550AFF 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.