#604C9A
Closest named color: Twilight (#4E518B). oklch(47.5% 0.122 293), rgb(96, 76, 154).
Aa
White text reads best on this color (7.00:1).
About this color
#604C9A is a medium-dark, moderately saturated purple. In OKLCH its lightness is 48%, its chroma 0.122 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.041 away. White text reads best on it, at 7.00:1.
| Hue family | Purples |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.122) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.99:1 |
| White text | 7.00:1 |
Values
| HEX | #604C9A |
| RGB | rgb(96, 76, 154) |
| HSL | hsl(255, 34%, 45%) |
| OKLCH | oklch(47.5% 0.122 293) |
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 #604C9A | 7.00:1 | AAA | Lc -89.0 | Fine for body text |
| Black text on #604C9A | 2.99:1 | Fails | Lc 20.0 | Dividers and decoration only |
| #604C9A text on white | 7.00:1 | AAA | Lc 84.1 | Fine for body text |
| #604C9A text on black | 2.99:1 | Fails | Lc -17.9 | 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
#EAE8F5
oklch(93.6% 0.018 293.1)
-
Step 200
200
#D9D6EE
oklch(88.6% 0.033 291.5)
-
Step 300
300
#C1BAE4
oklch(80.8% 0.059 292.7)
-
Step 400
400
#A295D7
oklch(70.6% 0.096 292.8)
-
Step 500
500
#8D7ACC
oklch(63.1% 0.122 293.2)
-
Step 600
600
#7762B9
oklch(55.6% 0.132 292.7)
-
Step 700
700 (this color)
#604C9A
oklch(47.5% 0.122 293)
-
Step 800
800
#524281
oklch(42.7% 0.102 293.3)
-
Step 900
900
#433967
oklch(37.7% 0.077 292.3)
-
Step 950
950
#27213D
oklch(26.9% 0.051 292.4)
#604C9A 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) | #2E5A9D | 0.071 |
| Deuteranopia (no green cones) | #325898 | 0.068 |
| Tritanopia (no blue cones) | #525B6C | 0.098 |
| Achromatopsia (no color) | #595959 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #604C9A
#604C9A
oklch(47.5% 0.122 293)
- #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 #604C9A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.041
- Blueberry #464196 ΔE 0.055
- Dusk #4E5481 ΔE 0.057
- Rebecca Purple #663399 ΔE 0.057
- Dusky Blue #475F94 ΔE 0.062
- Dark Slate Blue #483D8B ΔE 0.063
- Denim Blue #3B5B92 ΔE 0.066
- Iris #6258C4 ΔE 0.070
Use #604C9A 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.