#553669
Closest named color: Dark Slate Blue (#483D8B). oklch(39.2% 0.09 310.9), rgb(85, 54, 105).
Aa
White text reads best on this color (9.91:1).
About this color
#553669 is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.090 and its hue 311°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.061 away. White text reads best on it, at 9.91:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.090) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.11:1 |
| White text | 9.91:1 |
Values
| HEX | #553669 |
| RGB | rgb(85, 54, 105) |
| HSL | hsl(276, 32%, 31%) |
| OKLCH | oklch(39.2% 0.09 310.9) |
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 #553669 | 9.91:1 | AAA | Lc -97.0 | Preferred for body text |
| Black text on #553669 | 2.11:1 | Fails | Lc 11.1 | Not readable |
| #553669 text on white | 9.91:1 | AAA | Lc 92.8 | Preferred for body text |
| #553669 text on black | 2.11:1 | Fails | Lc -9.6 | 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 900.
-
Step 50
50
#F7F4FA
oklch(97.1% 0.009 308.4)
-
Step 100
100
#EEE6F4
oklch(93.5% 0.021 311.1)
-
Step 200
200
#E1D3EC
oklch(88.6% 0.037 310.5)
-
Step 300
300
#CFB5E1
oklch(81% 0.067 311.4)
-
Step 400
400
#B68DD3
oklch(70.7% 0.109 310.6)
-
Step 500
500
#A46FC7
oklch(63.1% 0.139 310.7)
-
Step 600
600
#8F55B3
oklch(55.5% 0.151 310.9)
-
Step 700
700
#7A459A
oklch(49.1% 0.14 311.1)
-
Step 800
800
#63397D
oklch(42.7% 0.116 310.9)
-
Step 900
900 (this color)
#553669
oklch(39.2% 0.09 310.9)
-
Step 950
950
#2F1E3B
oklch(27.1% 0.056 310.1)
#553669 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) | #2B416B | 0.071 |
| Deuteranopia (no green cones) | #334368 | 0.065 |
| Tritanopia (no blue cones) | #533E4A | 0.064 |
| Achromatopsia (no color) | #434343 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #553669
#553669
oklch(39.2% 0.09 310.9)
- #344F14
#344F14
oklch(39.2% 0.091 130.8)
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 #553669, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.061
- Grape Purple #5D1451 ΔE 0.078
- Blueberry #464196 ΔE 0.080
- Twilight #4E518B ΔE 0.084
- Purple Brown #673A3F ΔE 0.084
- Dusk #4E5481 ΔE 0.085
- Rebecca Purple #663399 ΔE 0.086
- Dark Grey Blue #29465B ΔE 0.088
Use #553669 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.