#604FB1
Closest named color: Iris (#6258C4). oklch(49.6% 0.15 287.6), rgb(96, 79, 177).
Aa
White text reads best on this color (6.46:1).
About this color
#604FB1 is a medium-dark, vivid purple. In OKLCH its lightness is 50%, its chroma 0.150 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.036 away. White text reads best on it, at 6.46:1.
| Hue family | Purples |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.150) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.25:1 |
| White text | 6.46:1 |
Values
| HEX | #604FB1 |
| RGB | rgb(96, 79, 177) |
| HSL | hsl(250, 39%, 50%) |
| OKLCH | oklch(49.6% 0.15 287.6) |
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 #604FB1 | 6.46:1 | AA | Lc -86.9 | Fine for body text |
| Black text on #604FB1 | 3.25:1 | AA large text | Lc 22.3 | Dividers and decoration only |
| #604FB1 text on white | 6.46:1 | AA | Lc 81.8 | Fine for body text |
| #604FB1 text on black | 3.25:1 | AA large text | Lc -20.1 | 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
#E9E8F8
oklch(93.6% 0.021 288.9)
-
Step 200
200
#D7D6F3
oklch(88.6% 0.04 287.1)
-
Step 300
300
#BDBAEE
oklch(80.9% 0.073 287.3)
-
Step 400
400
#9D95E5
oklch(70.8% 0.116 287.6)
-
Step 500
500
#8678DD
oklch(63.1% 0.148 287.7)
-
Step 600
600
#715FCB
oklch(55.7% 0.161 287.6)
-
Step 700
700 (this color)
#604FB1
oklch(49.6% 0.15 287.6)
-
Step 800
800
#4D408E
oklch(42.7% 0.124 287.6)
-
Step 900
900
#403771
oklch(37.7% 0.096 288)
-
Step 950
950
#252142
oklch(27% 0.06 287.2)
#604FB1 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) | #1A61B4 | 0.082 |
| Deuteranopia (no green cones) | #1A5CAF | 0.081 |
| Tritanopia (no blue cones) | #476478 | 0.124 |
| Achromatopsia (no color) | #5E5E5E | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #604FB1
#604FB1
oklch(49.6% 0.15 287.6)
- #696600
#696600
oklch(49.7% 0.107 107.7)
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 #604FB1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.036
- Bluey Purple #6241C7 ΔE 0.047
- Slate Blue #6A5ACD ΔE 0.053
- Light Indigo #6D5ACF ΔE 0.057
- Blue With A Hint Of Purple #533CC6 ΔE 0.060
- Dark Periwinkle #665FD1 ΔE 0.062
- Blurple #5539CC ΔE 0.068
- Twilight #4E518B ΔE 0.069
Use #604FB1 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.