#5B427F
Closest named color: Dark Slate Blue (#483D8B). oklch(43.5% 0.101 301.2), rgb(91, 66, 127).
Aa
White text reads best on this color (8.29:1).
About this color
#5B427F is a dark, moderately saturated purple. In OKLCH its lightness is 43%, its chroma 0.101 and its hue 301°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.043 away. White text reads best on it, at 8.29:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.101) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.53:1 |
| White text | 8.29:1 |
Values
| HEX | #5B427F |
| RGB | rgb(91, 66, 127) |
| HSL | hsl(265, 32%, 38%) |
| OKLCH | oklch(43.5% 0.101 301.2) |
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 #5B427F | 8.29:1 | AAA | Lc -93.1 | Preferred for body text |
| Black text on #5B427F | 2.53:1 | Fails | Lc 15.5 | Dividers and decoration only |
| #5B427F text on white | 8.29:1 | AAA | Lc 88.5 | Fine for body text |
| #5B427F text on black | 2.53:1 | Fails | Lc -13.7 | 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
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#ECE7F4
oklch(93.6% 0.018 303.4)
-
Step 200
200
#DCD5EC
oklch(88.6% 0.032 299.6)
-
Step 300
300
#C7B8E1
oklch(80.8% 0.059 301.8)
-
Step 400
400
#AB93D2
oklch(70.8% 0.094 301.5)
-
Step 500
500
#9677C6
oklch(63.1% 0.12 301.1)
-
Step 600
600
#815EB3
oklch(55.5% 0.132 301.2)
-
Step 700
700
#6D4E9A
oklch(49.2% 0.121 300.9)
-
Step 800
800 (this color)
#5B427F
oklch(43.5% 0.101 301.2)
-
Step 900
900
#493764
oklch(37.8% 0.077 301.2)
-
Step 950
950
#2B203B
oklch(27% 0.051 301.9)
#5B427F 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) | #304E81 | 0.068 |
| Deuteranopia (no green cones) | #364E7D | 0.063 |
| Tritanopia (no blue cones) | #544D5A | 0.078 |
| Achromatopsia (no color) | #4E4E4E | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B427F
#5B427F
oklch(43.5% 0.101 301.2)
- #495908
#495908
oklch(43.5% 0.1 121.3)
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 #5B427F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.043
- Twilight #4E518B ΔE 0.045
- Dusk #4E5481 ΔE 0.052
- Blueberry #464196 ΔE 0.053
- Rebecca Purple #663399 ΔE 0.060
- Dusty Grape #545775 ΔE 0.066
- Denim Blue #3B5B92 ΔE 0.079
- YInMn Blue #415A77 ΔE 0.080
Use #5B427F 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.