#553B98
Closest named color: Blueberry (#464196). oklch(43.3% 0.145 292.1), rgb(85, 59, 152).
Aa
White text reads best on this color (8.51:1).
About this color
#553B98 is a dark, vivid purple. In OKLCH its lightness is 43%, its chroma 0.145 and its hue 292°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.028 away. White text reads best on it, at 8.51:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | vivid (0.145) |
| Temperature | in between |
| Nearest name | Blueberry (#464196) |
| Black text | 2.46:1 |
| White text | 8.51:1 |
Values
| HEX | #553B98 |
| RGB | rgb(85, 59, 152) |
| HSL | hsl(257, 44%, 41%) |
| OKLCH | oklch(43.3% 0.145 292.1) |
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 #553B98 | 8.51:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #553B98 | 2.46:1 | Fails | Lc 15.0 | Dividers and decoration only |
| #553B98 text on white | 8.51:1 | AAA | Lc 88.9 | Fine for body text |
| #553B98 text on black | 2.46:1 | Fails | Lc -13.3 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#EAE7F9
oklch(93.6% 0.024 293.6)
-
Step 200
200
#D9D4F6
oklch(88.5% 0.047 292.2)
-
Step 300
300
#C1B7F4
oklch(80.9% 0.086 291.9)
-
Step 400
400
#A38FEE
oklch(70.6% 0.137 292.2)
-
Step 500
500
#8E70E8
oklch(63% 0.174 292.2)
-
Step 600
600
#7A55D6
oklch(55.6% 0.189 292.4)
-
Step 700
700
#6744BA
oklch(49.1% 0.177 292.3)
-
Step 800
800 (this color)
#553B98
oklch(43.3% 0.145 292.1)
-
Step 900
900
#443278
oklch(37.6% 0.115 291.8)
-
Step 950
950
#281E46
oklch(27% 0.072 292.4)
#553B98 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) | #004E9B | 0.091 |
| Deuteranopia (no green cones) | #004B96 | 0.091 |
| Tritanopia (no blue cones) | #425063 | 0.118 |
| Achromatopsia (no color) | #4D4D4D | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #553B98
#553B98
oklch(43.3% 0.145 292.1)
- #525500
#525500
oklch(43.2% 0.096 112.1)
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 #553B98, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.028
- Dark Slate Blue #483D8B ΔE 0.031
- Rebecca Purple #663399 ΔE 0.034
- Twilight #4E518B ΔE 0.063
- Blue With A Hint Of Purple #533CC6 ΔE 0.074
- Chrysanthemum #560BAD ΔE 0.076
- Cobalt #1E488F ΔE 0.079
- Bluey Purple #6241C7 ΔE 0.079
Use #553B98 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.