#553598
Closest named color: Rebecca Purple (#663399). oklch(42.3% 0.154 293.6), rgb(85, 53, 152).
Aa
White text reads best on this color (8.94:1).
About this color
#553598 is a dark, vivid purple. In OKLCH its lightness is 42%, its chroma 0.154 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.032 away. White text reads best on it, at 8.94:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | vivid (0.154) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.34:1 |
| White text | 8.94:1 |
Values
| HEX | #553598 |
| RGB | rgb(85, 53, 152) |
| HSL | hsl(259, 48%, 40%) |
| OKLCH | oklch(42.3% 0.154 293.6) |
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 #553598 | 8.94:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #553598 | 2.34:1 | Fails | Lc 13.9 | Not readable |
| #553598 text on white | 8.94:1 | AAA | Lc 90.0 | Preferred for body text |
| #553598 text on black | 2.34:1 | Fails | Lc -12.2 | 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
#EAE7FA
oklch(93.6% 0.026 293.1)
-
Step 200
200
#DAD3F8
oklch(88.4% 0.051 294)
-
Step 300
300
#C3B6F6
oklch(80.9% 0.09 293.6)
-
Step 400
400
#A68DF1
oklch(70.7% 0.144 293.9)
-
Step 500
500
#916DEC
oklch(63% 0.184 293.5)
-
Step 600
600
#7D51DA
oklch(55.6% 0.199 293.7)
-
Step 700
700
#6A40BD
oklch(49% 0.186 293.9)
-
Step 800
800 (this color)
#553598
oklch(42.3% 0.154 293.6)
-
Step 900
900
#46307A
oklch(37.6% 0.121 293.4)
-
Step 950
950
#291D47
oklch(26.9% 0.076 293.9)
#553598 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) | #004B9B | 0.096 |
| Deuteranopia (no green cones) | #004896 | 0.096 |
| Tritanopia (no blue cones) | #424C61 | 0.123 |
| Achromatopsia (no color) | #494949 | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #553598
#553598
oklch(42.3% 0.154 293.6)
- #4E5300
#4E5300
oklch(42.3% 0.095 113.7)
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 #553598, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.032
- Dark Slate Blue #483D8B ΔE 0.036
- Blueberry #464196 ΔE 0.036
- Chrysanthemum #560BAD ΔE 0.065
- Imperial Purple #480CA8 ΔE 0.071
- Blue With A Hint Of Purple #533CC6 ΔE 0.076
- Twilight #4E518B ΔE 0.076
- Bluey Purple #6241C7 ΔE 0.083
Use #553598 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.