#553077
Closest named color: Dark Slate Blue (#483D8B). oklch(39.1% 0.119 305.6), rgb(85, 48, 119).
Aa
White text reads best on this color (10.11:1).
About this color
#553077 is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.119 and its hue 306°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.048 away. White text reads best on it, at 10.11:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.119) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.07:1 |
| White text | 10.11:1 |
Values
| HEX | #553077 |
| RGB | rgb(85, 48, 119) |
| HSL | hsl(271, 43%, 33%) |
| OKLCH | oklch(39.1% 0.119 305.6) |
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 #553077 | 10.11:1 | AAA | Lc -97.3 | Preferred for body text |
| Black text on #553077 | 2.07:1 | Fails | Lc 10.8 | Not readable |
| #553077 text on white | 10.11:1 | AAA | Lc 93.1 | Preferred for body text |
| #553077 text on black | 2.07:1 | Fails | Lc -9.3 | 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 900.
-
Step 50
50
#F7F4FC
oklch(97.2% 0.011 303.1)
-
Step 100
100
#EEE6F8
oklch(93.6% 0.025 305.8)
-
Step 200
200
#E1D1F4
oklch(88.4% 0.05 306)
-
Step 300
300
#CEB2EF
oklch(80.8% 0.089 305.4)
-
Step 400
400
#B687E7
oklch(70.6% 0.144 305.6)
-
Step 500
500
#A566E0
oklch(63.2% 0.183 305.6)
-
Step 600
600
#9049CD
oklch(55.6% 0.198 305.6)
-
Step 700
700
#7B39B2
oklch(49.2% 0.185 305.6)
-
Step 800
800
#643090
oklch(42.7% 0.154 305.7)
-
Step 900
900 (this color)
#553077
oklch(39.1% 0.119 305.6)
-
Step 950
950
#2F1B43
oklch(27% 0.074 305)
#553077 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) | #144079 | 0.096 |
| Deuteranopia (no green cones) | #234275 | 0.087 |
| Tritanopia (no blue cones) | #4F3E4E | 0.088 |
| Achromatopsia (no color) | #424242 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #553077
#553077
oklch(39.1% 0.119 305.6)
- #384E00
#384E00
oklch(39.1% 0.099 126)
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 #553077, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.048
- Rebecca Purple #663399 ΔE 0.064
- Blueberry #464196 ΔE 0.067
- Indigo #4B0082 ΔE 0.080
- Grape Purple #5D1451 ΔE 0.081
- Royal Purple #4B006E ΔE 0.084
- Twilight #4E518B ΔE 0.087
- Dusk #4E5481 ΔE 0.095
Use #553077 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.