#5B478D
Closest named color: Twilight (#4E518B). oklch(45.3% 0.112 294.7), rgb(91, 71, 141).
Aa
White text reads best on this color (7.69:1).
About this color
#5B478D is a medium-dark, moderately saturated purple. In OKLCH its lightness is 45%, its chroma 0.112 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.033 away. White text reads best on it, at 7.69:1.
| Hue family | Purples |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.112) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.73:1 |
| White text | 7.69:1 |
Values
| HEX | #5B478D |
| RGB | rgb(91, 71, 141) |
| HSL | hsl(257, 33%, 42%) |
| OKLCH | oklch(45.3% 0.112 294.7) |
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 #5B478D | 7.69:1 | AAA | Lc -91.3 | Preferred for body text |
| Black text on #5B478D | 2.73:1 | Fails | Lc 17.5 | Dividers and decoration only |
| #5B478D text on white | 7.69:1 | AAA | Lc 86.5 | Fine for body text |
| #5B478D text on black | 2.73:1 | Fails | Lc -15.5 | Dividers and decoration only |
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
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#EAE8F6
oklch(93.7% 0.019 292.6)
-
Step 200
200
#DAD5EF
oklch(88.5% 0.036 294.5)
-
Step 300
300
#C3B9E7
oklch(80.9% 0.065 294.9)
-
Step 400
400
#A593DB
oklch(70.6% 0.105 295.1)
-
Step 500
500
#9077D1
oklch(63.1% 0.134 295.1)
-
Step 600
600
#7A5EBE
oklch(55.5% 0.145 294.7)
-
Step 700
700
#674DA4
oklch(49% 0.135 294.7)
-
Step 800
800 (this color)
#5B478D
oklch(45.3% 0.112 294.7)
-
Step 900
900
#45376B
oklch(37.8% 0.087 294.2)
-
Step 950
950
#28203E
oklch(26.8% 0.055 294.7)
#5B478D 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) | #2E548F | 0.067 |
| Deuteranopia (no green cones) | #32528B | 0.063 |
| Tritanopia (no blue cones) | #4F5563 | 0.091 |
| Achromatopsia (no color) | #535353 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B478D
#5B478D
oklch(45.3% 0.112 294.7)
- #555C00
#555C00
oklch(45.3% 0.102 114.8)
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 #5B478D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.033
- Blueberry #464196 ΔE 0.044
- Dark Slate Blue #483D8B ΔE 0.044
- Dusk #4E5481 ΔE 0.048
- Rebecca Purple #663399 ΔE 0.054
- Denim Blue #3B5B92 ΔE 0.066
- Dusty Grape #545775 ΔE 0.067
- Dusky Blue #475F94 ΔE 0.068
Use #5B478D 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.