#604CFF
Closest named color: Neon Blue (#4361EE). oklch(55.5% 0.251 279.4), rgb(96, 76, 255).
Aa
White text reads best on this color (5.28:1).
About this color
#604CFF is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.251 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Neon Blue (#4361EE), ΔE 0.056 away. White text reads best on it, at 5.28:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.251) |
| Temperature | cool |
| Nearest name | Neon Blue (#4361EE) |
| Black text | 3.97:1 |
| White text | 5.28:1 |
Values
| HEX | #604CFF |
| RGB | rgb(96, 76, 255) |
| HSL | hsl(247, 100%, 65%) |
| OKLCH | oklch(55.5% 0.251 279.4) |
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 #604CFF | 5.28:1 | AA | Lc -80.8 | Fine for body text |
| Black text on #604CFF | 3.97:1 | AA large text | Lc 28.7 | Dividers and decoration only |
| #604CFF text on white | 5.28:1 | AA | Lc 75.4 | Fine for body text |
| #604CFF text on black | 3.97:1 | AA large text | Lc -26.3 | 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 600.
-
Step 50
50
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E5E8FF
oklch(93.6% 0.031 279.9)
-
Step 200
200
#D1D6FF
oklch(88.5% 0.057 279.7)
-
Step 300
300
#B3BAFF
oklch(80.8% 0.098 279.5)
-
Step 400
400
#8E93FF
oklch(70.6% 0.156 279.6)
-
Step 500
500
#7573FF
oklch(63% 0.202 279.5)
-
Step 600
600 (this color)
#604CFF
oklch(55.5% 0.251 279.4)
-
Step 700
700
#513BDF
oklch(49.1% 0.234 279.5)
-
Step 800
800
#4133B4
oklch(42.7% 0.193 279.2)
-
Step 900
900
#362F8E
oklch(37.6% 0.151 279.6)
-
Step 950
950
#1F1D53
oklch(27% 0.095 279.5)
#604CFF 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) | #0072FF | 0.094 |
| Deuteranopia (no green cones) | #0064FC | 0.080 |
| Tritanopia (no blue cones) | #007DA1 | 0.205 |
| Achromatopsia (no color) | #6C6C6C | 0.252 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #604CFF
#604CFF
oklch(55.5% 0.251 279.4)
- #847300
#847300
oklch(55.5% 0.115 98.9)
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 #604CFF, closest first.
No curated palette has a color within ΔE 0.04 of #604CFF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Neon Blue #4361EE ΔE 0.056
- Purpley Blue #5F34E7 ΔE 0.057
- Burple #6832E3 ΔE 0.063
- Warm Blue #4B57DB ΔE 0.063
- Purply Blue #661AEE ΔE 0.072
- Azul #1D5DEC ΔE 0.076
- Light Royal Blue #3A2EFE ΔE 0.077
- Electric Blue #0652FF ΔE 0.078
Use #604CFF 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.