#553491
Closest named color: Dark Slate Blue (#483D8B). oklch(41.6% 0.146 295.7), rgb(85, 52, 145).
Aa
White text reads best on this color (9.18:1).
About this color
#553491 is a dark, vivid purple. In OKLCH its lightness is 42%, its chroma 0.146 and its hue 296°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.031 away. White text reads best on it, at 9.18:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | vivid (0.146) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.28:1 |
| White text | 9.18:1 |
Values
| HEX | #553491 |
| RGB | rgb(85, 52, 145) |
| HSL | hsl(261, 47%, 39%) |
| OKLCH | oklch(41.6% 0.146 295.7) |
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 #553491 | 9.18:1 | AAA | Lc -95.1 | Preferred for body text |
| Black text on #553491 | 2.28:1 | Fails | Lc 13.2 | Not readable |
| #553491 text on white | 9.18:1 | AAA | Lc 90.7 | Preferred for body text |
| #553491 text on black | 2.28:1 | Fails | Lc -11.6 | Not readable |
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
#F6F4FD
oklch(97.1% 0.012 296.4)
-
Step 100
100
#EBE7F9
oklch(93.6% 0.024 296.1)
-
Step 200
200
#DBD3F6
oklch(88.4% 0.048 295.9)
-
Step 300
300
#C5B6F2
oklch(80.9% 0.085 295.9)
-
Step 400
400
#A88DEC
oklch(70.6% 0.138 295.8)
-
Step 500
500
#946EE6
oklch(63.1% 0.175 295.6)
-
Step 600
600
#8052D4
oklch(55.6% 0.191 295.9)
-
Step 700
700
#6C42B7
oklch(49.1% 0.176 295.7)
-
Step 800
800 (this color)
#553491
oklch(41.6% 0.146 295.7)
-
Step 900
900
#483176
oklch(37.7% 0.114 295.8)
-
Step 950
950
#2A1D45
oklch(26.9% 0.073 296.2)
#553491 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) | #004894 | 0.098 |
| Deuteranopia (no green cones) | #00468F | 0.098 |
| Tritanopia (no blue cones) | #46495D | 0.115 |
| Achromatopsia (no color) | #484848 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #553491
#553491
oklch(41.6% 0.146 295.7)
- #4A5200
#4A5200
oklch(41.7% 0.095 116.1)
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 #553491, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.031
- Rebecca Purple #663399 ΔE 0.034
- Blueberry #464196 ΔE 0.038
- Chrysanthemum #560BAD ΔE 0.070
- Imperial Purple #480CA8 ΔE 0.075
- Twilight #4E518B ΔE 0.076
- Cobalt #1E488F ΔE 0.085
- Indigo #4B0082 ΔE 0.086
Use #553491 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.