#604EFF
Closest named color: Neon Blue (#4361EE). oklch(55.7% 0.249 279.1), rgb(96, 78, 255).
Aa
White text reads best on this color (5.20:1).
About this color
#604EFF is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.249 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Neon Blue (#4361EE), ΔE 0.054 away. White text reads best on it, at 5.20:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.249) |
| Temperature | cool |
| Nearest name | Neon Blue (#4361EE) |
| Black text | 4.03:1 |
| White text | 5.20:1 |
Values
| HEX | #604EFF |
| RGB | rgb(96, 78, 255) |
| HSL | hsl(246, 100%, 65%) |
| OKLCH | oklch(55.7% 0.249 279.1) |
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 #604EFF | 5.20:1 | AA | Lc -80.4 | Fine for body text |
| Black text on #604EFF | 4.03:1 | AA large text | Lc 29.1 | Dividers and decoration only |
| #604EFF text on white | 5.20:1 | AA | Lc 75.0 | Fine for body text |
| #604EFF text on black | 4.03:1 | AA large text | Lc -26.7 | 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 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
#D0D6FF
oklch(88.5% 0.057 278.6)
-
Step 300
300
#B3BAFF
oklch(80.8% 0.098 279.5)
-
Step 400
400
#8D94FF
oklch(70.8% 0.155 278.8)
-
Step 500
500
#7474FF
oklch(63.2% 0.201 278.9)
-
Step 600
600 (this color)
#604EFF
oklch(55.7% 0.249 279.1)
-
Step 700
700
#503CDE
oklch(49.1% 0.232 279.1)
-
Step 800
800
#4134B3
oklch(42.7% 0.191 279.2)
-
Step 900
900
#36308E
oklch(37.8% 0.15 279.3)
-
Step 950
950
#1F1D53
oklch(27% 0.095 279.5)
#604EFF 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) | #0073FF | 0.093 |
| Deuteranopia (no green cones) | #0065FC | 0.079 |
| Tritanopia (no blue cones) | #007EA1 | 0.204 |
| Achromatopsia (no color) | #6D6D6D | 0.250 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #604EFF
#604EFF
oklch(55.7% 0.249 279.1)
- #857400
#857400
oklch(55.8% 0.116 99)
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 #604EFF, closest first.
No curated palette has a color within ΔE 0.04 of #604EFF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Neon Blue #4361EE ΔE 0.054
- Purpley Blue #5F34E7 ΔE 0.059
- Warm Blue #4B57DB ΔE 0.063
- Burple #6832E3 ΔE 0.066
- Azul #1D5DEC ΔE 0.075
- Purply Blue #661AEE ΔE 0.076
- Medium Slate Blue #7B68EE ΔE 0.077
- Royal Blue #4169E1 ΔE 0.078
Use #604EFF 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.