#553FAB
Closest named color: Blueberry (#464196). oklch(45.4% 0.165 287.3), rgb(85, 63, 171).
Aa
White text reads best on this color (7.82:1).
About this color
#553FAB is a medium-dark, vivid purple. In OKLCH its lightness is 45%, its chroma 0.165 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.042 away. White text reads best on it, at 7.82:1.
| Hue family | Purples |
| Lightness | medium-dark (45%) |
| Chroma | vivid (0.165) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.68:1 |
| White text | 7.82:1 |
Values
| HEX | #553FAB |
| RGB | rgb(85, 63, 171) |
| HSL | hsl(252, 46%, 46%) |
| OKLCH | oklch(45.4% 0.165 287.3) |
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 #553FAB | 7.82:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #553FAB | 2.68:1 | Fails | Lc 17.3 | Dividers and decoration only |
| #553FAB text on white | 7.82:1 | AAA | Lc 86.7 | Fine for body text |
| #553FAB text on black | 2.68:1 | Fails | Lc -15.4 | 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 800.
-
Step 50
50
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#E8E7FC
oklch(93.5% 0.028 288)
-
Step 200
200
#D6D4FB
oklch(88.4% 0.053 287.6)
-
Step 300
300
#BCB7FC
oklch(80.8% 0.097 287.3)
-
Step 400
400
#9C8FFB
oklch(70.7% 0.155 287.3)
-
Step 500
500
#866EF8
oklch(63% 0.198 287.3)
-
Step 600
600
#7251E7
oklch(55.6% 0.215 287.3)
-
Step 700
700
#6041C8
oklch(49.1% 0.198 287.3)
-
Step 800
800 (this color)
#553FAB
oklch(45.4% 0.165 287.3)
-
Step 900
900
#403181
oklch(37.7% 0.129 287.1)
-
Step 950
950
#251E4B
oklch(27% 0.08 286.9)
#553FAB 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) | #0055AE | 0.087 |
| Deuteranopia (no green cones) | #004FA9 | 0.085 |
| Tritanopia (no blue cones) | #36596F | 0.137 |
| Achromatopsia (no color) | #525252 | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #553FAB
#553FAB
oklch(45.4% 0.165 287.3)
- #5D5A00
#5D5A00
oklch(45.6% 0.098 107.5)
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 #553FAB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.042
- Blue With A Hint Of Purple #533CC6 ΔE 0.044
- Rebecca Purple #663399 ΔE 0.048
- Bluey Purple #6241C7 ΔE 0.050
- Blurple #5539CC ΔE 0.053
- Dark Slate Blue #483D8B ΔE 0.057
- Majorelle Blue #3F37C9 ΔE 0.063
- Purple Blue #5D21D0 ΔE 0.073
Use #553FAB 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.