#4B3975
Closest named color: Dark Slate Blue (#483D8B). oklch(39.4% 0.099 295.3), rgb(75, 57, 117).
Aa
White text reads best on this color (9.80:1).
About this color
#4B3975 is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.099 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.037 away. White text reads best on it, at 9.80:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.099) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.14:1 |
| White text | 9.80:1 |
Values
| HEX | #4B3975 |
| RGB | rgb(75, 57, 117) |
| HSL | hsl(258, 34%, 34%) |
| OKLCH | oklch(39.4% 0.099 295.3) |
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 #4B3975 | 9.80:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #4B3975 | 2.14:1 | Fails | Lc 11.4 | Not readable |
| #4B3975 text on white | 9.80:1 | AAA | Lc 92.6 | Preferred for body text |
| #4B3975 text on black | 2.14:1 | Fails | Lc -9.9 | 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
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#EBE7F7
oklch(93.6% 0.022 297.4)
-
Step 200
200
#DBD4F2
oklch(88.5% 0.041 296.2)
-
Step 300
300
#C4B8EC
oklch(81% 0.073 295.3)
-
Step 400
400
#A691E3
oklch(70.7% 0.119 294.9)
-
Step 500
500
#9273DA
oklch(63.1% 0.152 295.6)
-
Step 600
600
#7D59C8
oklch(55.6% 0.166 295.4)
-
Step 700
700
#6949AD
oklch(49.1% 0.153 294.9)
-
Step 800
800
#563C8C
oklch(42.7% 0.128 295.5)
-
Step 900
900 (this color)
#4B3975
oklch(39.4% 0.099 295.3)
-
Step 950
950
#291F41
oklch(26.9% 0.062 295.5)
#4B3975 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) | #244477 | 0.060 |
| Deuteranopia (no green cones) | #274374 | 0.057 |
| Tritanopia (no blue cones) | #414551 | 0.081 |
| Achromatopsia (no color) | #444444 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B3975
#4B3975
oklch(39.4% 0.099 295.3)
- #454B00
#454B00
oklch(39.4% 0.089 114.9)
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 #4B3975, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.037
- Blueberry #464196 ΔE 0.057
- Twilight #4E518B ΔE 0.071
- Cobalt #1E488F ΔE 0.076
- Dusk #4E5481 ΔE 0.076
- Twilight Blue #0A437A ΔE 0.077
- Rebecca Purple #663399 ΔE 0.078
- Dark Grey Blue #29465B ΔE 0.082
Use #4B3975 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.