#604C99
Closest named color: Twilight (#4E518B). oklch(47.4% 0.121 293.2), rgb(96, 76, 153).
Aa
White text reads best on this color (7.02:1).
About this color
#604C99 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 47%, its chroma 0.121 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.040 away. White text reads best on it, at 7.02:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.121) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.99:1 |
| White text | 7.02:1 |
Values
| HEX | #604C99 |
| RGB | rgb(96, 76, 153) |
| HSL | hsl(256, 34%, 45%) |
| OKLCH | oklch(47.4% 0.121 293.2) |
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 #604C99 | 7.02:1 | AAA | Lc -89.1 | Fine for body text |
| Black text on #604C99 | 2.99:1 | Fails | Lc 19.9 | Dividers and decoration only |
| #604C99 text on white | 7.02:1 | AAA | Lc 84.1 | Fine for body text |
| #604C99 text on black | 2.99:1 | Fails | Lc -17.8 | 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 700.
-
Step 50
50
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#EAE8F4
oklch(93.6% 0.016 293.7)
-
Step 200
200
#D9D6ED
oklch(88.5% 0.031 291.7)
-
Step 300
300
#C2BAE4
oklch(80.9% 0.059 293.8)
-
Step 400
400
#A396D6
oklch(70.8% 0.093 293.2)
-
Step 500
500
#8D7ACB
oklch(63.1% 0.12 293.4)
-
Step 600
600
#7762B8
oklch(55.6% 0.131 292.9)
-
Step 700
700 (this color)
#604C99
oklch(47.4% 0.121 293.2)
-
Step 800
800
#524380
oklch(42.8% 0.099 293.1)
-
Step 900
900
#443967
oklch(37.8% 0.077 293.3)
-
Step 950
950
#27213C
oklch(26.8% 0.05 293)
#604C99 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) | #2F5A9C | 0.071 |
| Deuteranopia (no green cones) | #335897 | 0.067 |
| Tritanopia (no blue cones) | #525B6B | 0.098 |
| Achromatopsia (no color) | #595959 | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #604C99
#604C99
oklch(47.4% 0.121 293.2)
- #5D6200
#5D6200
oklch(47.6% 0.106 113.2)
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 #604C99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.040
- Blueberry #464196 ΔE 0.054
- Dusk #4E5481 ΔE 0.056
- Rebecca Purple #663399 ΔE 0.058
- Dusky Blue #475F94 ΔE 0.062
- Dark Slate Blue #483D8B ΔE 0.062
- Denim Blue #3B5B92 ΔE 0.065
- Iris #6258C4 ΔE 0.071
Use #604C99 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.