#604B78
Closest named color: Dusk (#4E5481). oklch(45.3% 0.076 305), rgb(96, 75, 120).
Aa
White text reads best on this color (7.56:1).
About this color
#604B78 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 45%, its chroma 0.076 and its hue 305°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.036 away. White text reads best on it, at 7.56:1.
| Hue family | Purples |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.076) |
| Temperature | in between |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.77:1 |
| White text | 7.56:1 |
Values
| HEX | #604B78 |
| RGB | rgb(96, 75, 120) |
| HSL | hsl(268, 23%, 38%) |
| OKLCH | oklch(45.3% 0.076 305) |
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 #604B78 | 7.56:1 | AAA | Lc -91.0 | Preferred for body text |
| Black text on #604B78 | 2.77:1 | Fails | Lc 17.8 | Dividers and decoration only |
| #604B78 text on white | 7.56:1 | AAA | Lc 86.2 | Fine for body text |
| #604B78 text on black | 2.77:1 | Fails | Lc -15.8 | 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
#F6F4F9
oklch(97% 0.007 304.2)
-
Step 100
100
#ECE8F1
oklch(93.7% 0.013 306)
-
Step 200
200
#DDD5E7
oklch(88.5% 0.026 305.8)
-
Step 300
300
#C7BAD8
oklch(80.9% 0.044 305)
-
Step 400
400
#AB96C4
oklch(70.8% 0.07 305.5)
-
Step 500
500
#967BB6
oklch(63% 0.091 304.9)
-
Step 600
600
#8164A1
oklch(55.7% 0.097 305.3)
-
Step 700
700
#6D538A
oklch(49.2% 0.09 305.1)
-
Step 800
800 (this color)
#604B78
oklch(45.3% 0.076 305)
-
Step 900
900
#49395B
oklch(37.7% 0.06 305.3)
-
Step 950
950
#2B2235
oklch(27.1% 0.037 305.8)
#604B78 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) | #41537A | 0.051 |
| Deuteranopia (no green cones) | #465477 | 0.047 |
| Tritanopia (no blue cones) | #5C525C | 0.057 |
| Achromatopsia (no color) | #545454 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #604B78
#604B78
oklch(45.3% 0.076 305)
- #4D5D2C
#4D5D2C
oklch(45.2% 0.075 124.2)
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 #604B78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.036
- Dusty Grape #545775 ΔE 0.040
- Twilight #4E518B ΔE 0.041
- YInMn Blue #415A77 ΔE 0.061
- Dusky Blue #475F94 ΔE 0.070
- Dark Slate Blue #483D8B ΔE 0.071
- Denim Blue #3B5B92 ΔE 0.071
- Brownish Purple #76424E ΔE 0.076
Use #604B78 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.