#604FAB
Closest named color: Iris (#6258C4). oklch(49.2% 0.142 288.6), rgb(96, 79, 171).
Aa
White text reads best on this color (6.55:1).
About this color
#604FAB is a medium-dark, vivid purple. In OKLCH its lightness is 49%, its chroma 0.142 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.043 away. White text reads best on it, at 6.55:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.142) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.20:1 |
| White text | 6.55:1 |
Values
| HEX | #604FAB |
| RGB | rgb(96, 79, 171) |
| HSL | hsl(251, 37%, 49%) |
| OKLCH | oklch(49.2% 0.142 288.6) |
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 #604FAB | 6.55:1 | AA | Lc -87.3 | Fine for body text |
| Black text on #604FAB | 3.20:1 | AA large text | Lc 21.8 | Dividers and decoration only |
| #604FAB text on white | 6.55:1 | AA | Lc 82.2 | Fine for body text |
| #604FAB text on black | 3.20:1 | AA large text | Lc -19.7 | 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
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E9E8F7
oklch(93.6% 0.02 289.1)
-
Step 200
200
#D7D6F1
oklch(88.5% 0.037 287.3)
-
Step 300
300
#BEBAEB
oklch(80.9% 0.069 288.5)
-
Step 400
400
#9E95E1
oklch(70.7% 0.11 288.7)
-
Step 500
500
#8779D8
oklch(63.1% 0.14 288.5)
-
Step 600
600
#7260C6
oklch(55.6% 0.153 288.5)
-
Step 700
700 (this color)
#604FAB
oklch(49.2% 0.142 288.6)
-
Step 800
800
#4E418A
oklch(42.7% 0.117 288.6)
-
Step 900
900
#41386F
oklch(37.8% 0.092 288.8)
-
Step 950
950
#262141
oklch(27.1% 0.058 289.1)
#604FAB 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) | #235FAE | 0.077 |
| Deuteranopia (no green cones) | #245BA9 | 0.075 |
| Tritanopia (no blue cones) | #4A6375 | 0.118 |
| Achromatopsia (no color) | #5D5D5D | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #604FAB
#604FAB
oklch(49.2% 0.142 288.6)
- #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 #604FAB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.043
- Bluey Purple #6241C7 ΔE 0.055
- Slate Blue #6A5ACD ΔE 0.060
- Twilight #4E518B ΔE 0.060
- Light Indigo #6D5ACF ΔE 0.064
- Blueberry #464196 ΔE 0.066
- Blue With A Hint Of Purple #533CC6 ΔE 0.067
- Rebecca Purple #663399 ΔE 0.067
Use #604FAB 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.