#553E69
Closest named color: Dark Slate Blue (#483D8B). oklch(40.8% 0.075 308), rgb(85, 62, 105).
Aa
White text reads best on this color (9.21:1).
About this color
#553E69 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.075 and its hue 308°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.062 away. White text reads best on it, at 9.21:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.075) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.27:1 |
| White text | 9.21:1 |
Values
| HEX | #553E69 |
| RGB | rgb(85, 62, 105) |
| HSL | hsl(272, 26%, 33%) |
| OKLCH | oklch(40.8% 0.075 308) |
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 #553E69 | 9.21:1 | AAA | Lc -95.5 | Preferred for body text |
| Black text on #553E69 | 2.27:1 | Fails | Lc 12.8 | Not readable |
| #553E69 text on white | 9.21:1 | AAA | Lc 91.1 | Preferred for body text |
| #553E69 text on black | 2.27:1 | Fails | Lc -11.2 | 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
#F6F4F9
oklch(97% 0.007 304.2)
-
Step 100
100
#ECE8F1
oklch(93.7% 0.013 306)
-
Step 200
200
#DDD5E6
oklch(88.4% 0.025 306.9)
-
Step 300
300
#C8BAD7
oklch(81% 0.043 307.1)
-
Step 400
400
#AD95C3
oklch(70.7% 0.071 308.3)
-
Step 500
500
#987BB4
oklch(63.1% 0.089 307.3)
-
Step 600
600
#83639F
oklch(55.6% 0.097 308)
-
Step 700
700
#6F5288
oklch(49.1% 0.09 308.1)
-
Step 800
800 (this color)
#553E69
oklch(40.8% 0.075 308)
-
Step 900
900
#4A395A
oklch(37.7% 0.059 307.4)
-
Step 950
950
#2B2134
oklch(26.8% 0.037 308.1)
#553E69 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) | #35476B | 0.055 |
| Deuteranopia (no green cones) | #3A4868 | 0.051 |
| Tritanopia (no blue cones) | #52444E | 0.055 |
| Achromatopsia (no color) | #484848 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #553E69
#553E69
oklch(40.8% 0.075 308)
- #3E5122
#3E5122
oklch(40.7% 0.075 127.6)
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 #553E69, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.062
- Dusk #4E5481 ΔE 0.066
- Twilight #4E518B ΔE 0.069
- Dusty Grape #545775 ΔE 0.071
- Purple Brown #673A3F ΔE 0.076
- Dark Grey Blue #29465B ΔE 0.077
- Blueberry #464196 ΔE 0.078
- Brownish Purple #76424E ΔE 0.081
Use #553E69 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.