#604FB7
Closest named color: Iris (#6258C4). oklch(50% 0.158 286.7), rgb(96, 79, 183).
Aa
White text reads best on this color (6.36:1).
About this color
#604FB7 is a medium-dark, vivid purple. In OKLCH its lightness is 50%, its chroma 0.158 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.029 away. White text reads best on it, at 6.36:1.
| Hue family | Purples |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.158) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.29:1 |
| White text | 6.36:1 |
Values
| HEX | #604FB7 |
| RGB | rgb(96, 79, 183) |
| HSL | hsl(250, 42%, 51%) |
| OKLCH | oklch(50% 0.158 286.7) |
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 #604FB7 | 6.36:1 | AA | Lc -86.5 | Fine for body text |
| Black text on #604FB7 | 3.29:1 | AA large text | Lc 22.7 | Dividers and decoration only |
| #604FB7 text on white | 6.36:1 | AA | Lc 81.3 | Fine for body text |
| #604FB7 text on black | 3.29:1 | AA large text | Lc -20.5 | 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
#D6D6F5
oklch(88.6% 0.042 285.5)
-
Step 300
300
#BCBAF0
oklch(80.9% 0.076 286.3)
-
Step 400
400
#9B94E9
oklch(70.7% 0.123 286.6)
-
Step 500
500
#8477E2
oklch(63% 0.157 286.6)
-
Step 600
600
#6F5DD0
oklch(55.5% 0.171 286.6)
-
Step 700
700 (this color)
#604FB7
oklch(50% 0.158 286.7)
-
Step 800
800
#4C3F92
oklch(42.7% 0.132 286.6)
-
Step 900
900
#3F3774
oklch(37.8% 0.101 286.5)
-
Step 950
950
#252044
oklch(26.9% 0.065 287.6)
#604FB7 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) | #0A62BA | 0.087 |
| Deuteranopia (no green cones) | #085CB5 | 0.086 |
| Tritanopia (no blue cones) | #43667B | 0.132 |
| Achromatopsia (no color) | #5F5F5F | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #604FB7
#604FB7
oklch(50% 0.158 286.7)
- #6B6700
#6B6700
oklch(50.1% 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 #604FB7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.029
- Bluey Purple #6241C7 ΔE 0.040
- Slate Blue #6A5ACD ΔE 0.045
- Light Indigo #6D5ACF ΔE 0.050
- Blue With A Hint Of Purple #533CC6 ΔE 0.055
- Dark Periwinkle #665FD1 ΔE 0.055
- Blurple #5539CC ΔE 0.062
- Warm Blue #4B57DB ΔE 0.064
Use #604FB7 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.