#604CB3
Closest named color: Iris (#6258C4). oklch(49.2% 0.157 288.2), rgb(96, 76, 179).
Aa
White text reads best on this color (6.59:1).
About this color
#604CB3 is a medium-dark, vivid purple. In OKLCH its lightness is 49%, its chroma 0.157 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.038 away. White text reads best on it, at 6.59:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.157) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.18:1 |
| White text | 6.59:1 |
Values
| HEX | #604CB3 |
| RGB | rgb(96, 76, 179) |
| HSL | hsl(252, 40%, 50%) |
| OKLCH | oklch(49.2% 0.157 288.2) |
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 #604CB3 | 6.59:1 | AA | Lc -87.4 | Fine for body text |
| Black text on #604CB3 | 3.18:1 | AA large text | Lc 21.7 | Dividers and decoration only |
| #604CB3 text on white | 6.59:1 | AA | Lc 82.3 | Fine for body text |
| #604CB3 text on black | 3.18:1 | AA large text | Lc -19.6 | 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
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#E9E8F8
oklch(93.6% 0.021 288.9)
-
Step 200
200
#D7D5F4
oklch(88.4% 0.042 288.5)
-
Step 300
300
#BEB9EF
oklch(80.8% 0.076 288.8)
-
Step 400
400
#9D94E8
oklch(70.8% 0.121 287.8)
-
Step 500
500
#8777E1
oklch(63.2% 0.155 288.1)
-
Step 600
600
#725DCE
oklch(55.6% 0.168 288.2)
-
Step 700
700 (this color)
#604CB3
oklch(49.2% 0.157 288.2)
-
Step 800
800
#4E3F91
oklch(42.8% 0.13 288)
-
Step 900
900
#403673
oklch(37.6% 0.101 288.1)
-
Step 950
950
#252044
oklch(26.9% 0.065 287.6)
#604CB3 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) | #055FB6 | 0.091 |
| Deuteranopia (no green cones) | #085AB1 | 0.089 |
| Tritanopia (no blue cones) | #466378 | 0.130 |
| Achromatopsia (no color) | #5D5D5D | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #604CB3
#604CB3
oklch(49.2% 0.157 288.2)
- #676500
#676500
oklch(49.2% 0.106 108.4)
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 #604CB3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.038
- Bluey Purple #6241C7 ΔE 0.040
- Blue With A Hint Of Purple #533CC6 ΔE 0.053
- Slate Blue #6A5ACD ΔE 0.054
- Light Indigo #6D5ACF ΔE 0.058
- Blurple #5539CC ΔE 0.061
- Dark Periwinkle #665FD1 ΔE 0.064
- Rebecca Purple #663399 ΔE 0.067
Use #604CB3 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.