#604FB3
Closest named color: Iris (#6258C4). oklch(49.7% 0.153 287.3), rgb(96, 79, 179).
Aa
White text reads best on this color (6.42:1).
About this color
#604FB3 is a medium-dark, vivid purple. In OKLCH its lightness is 50%, its chroma 0.153 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.033 away. White text reads best on it, at 6.42:1.
| Hue family | Purples |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.153) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.26:1 |
| White text | 6.42:1 |
Values
| HEX | #604FB3 |
| RGB | rgb(96, 79, 179) |
| HSL | hsl(250, 40%, 51%) |
| OKLCH | oklch(49.7% 0.153 287.3) |
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 #604FB3 | 6.42:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #604FB3 | 3.26:1 | AA large text | Lc 22.4 | Dividers and decoration only |
| #604FB3 text on white | 6.42:1 | AA | Lc 81.6 | Fine for body text |
| #604FB3 text on black | 3.26:1 | AA large text | Lc -20.2 | 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
#F5F5FC
oklch(97.2% 0.009 286.2)
-
Step 100
100
#E8E8F8
oklch(93.6% 0.022 286)
-
Step 200
200
#D7D6F4
oklch(88.6% 0.041 287.1)
-
Step 300
300
#BDBAEE
oklch(80.9% 0.073 287.3)
-
Step 400
400
#9C94E6
oklch(70.6% 0.118 287.4)
-
Step 500
500
#8578DF
oklch(63.1% 0.151 287)
-
Step 600
600
#705ECC
oklch(55.5% 0.164 287.3)
-
Step 700
700 (this color)
#604FB3
oklch(49.7% 0.153 287.3)
-
Step 800
800
#4D408F
oklch(42.7% 0.126 287.4)
-
Step 900
900
#403772
oklch(37.7% 0.098 287.8)
-
Step 950
950
#252143
oklch(27.1% 0.062 286.9)
#604FB3 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) | #1661B6 | 0.084 |
| Deuteranopia (no green cones) | #155CB1 | 0.083 |
| Tritanopia (no blue cones) | #456579 | 0.127 |
| Achromatopsia (no color) | #5F5F5F | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #604FB3
#604FB3
oklch(49.7% 0.153 287.3)
- #6A6600
#6A6600
oklch(49.8% 0.107 107)
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 #604FB3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.033
- Bluey Purple #6241C7 ΔE 0.045
- Slate Blue #6A5ACD ΔE 0.050
- Light Indigo #6D5ACF ΔE 0.054
- Blue With A Hint Of Purple #533CC6 ΔE 0.058
- Dark Periwinkle #665FD1 ΔE 0.059
- Blurple #5539CC ΔE 0.066
- Warm Blue #4B57DB ΔE 0.069
Use #604FB3 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.