#4E63E1
Closest named color: Royal Blue (#4169E1). oklch(55.5% 0.192 271.5), rgb(78, 99, 225).
Aa
White text reads best on this color (5.00:1).
About this color
#4E63E1 is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.192 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.018 away. White text reads best on it, at 5.00:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.192) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.19:1 |
| White text | 5.00:1 |
Values
| HEX | #4E63E1 |
| RGB | rgb(78, 99, 225) |
| HSL | hsl(231, 71%, 59%) |
| OKLCH | oklch(55.5% 0.192 271.5) |
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 #4E63E1 | 5.00:1 | AA | Lc -79.6 | Fine for body text |
| Black text on #4E63E1 | 4.19:1 | AA large text | Lc 29.9 | Dividers and decoration only |
| #4E63E1 text on white | 5.00:1 | AA | Lc 74.2 | Content text, not long reading |
| #4E63E1 text on black | 4.19:1 | AA large text | Lc -27.5 | 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 600.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CDD8FA
oklch(88.5% 0.048 271.2)
-
Step 300
300
#ACBEF9
oklch(80.9% 0.086 271.2)
-
Step 400
400
#829AF6
oklch(70.7% 0.137 271.4)
-
Step 500
500
#657EF3
oklch(63.2% 0.176 271.5)
-
Step 600
600 (this color)
#4E63E1
oklch(55.5% 0.192 271.5)
-
Step 700
700
#4051C4
oklch(49.1% 0.179 271.7)
-
Step 800
800
#34439E
oklch(42.6% 0.148 271.6)
-
Step 900
900
#2D3A7E
oklch(37.7% 0.116 271.6)
-
Step 950
950
#1A234A
oklch(27.1% 0.073 271.1)
#4E63E1 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) | #0076E5 | 0.058 |
| Deuteranopia (no green cones) | #0069DE | 0.049 |
| Tritanopia (no blue cones) | #008198 | 0.158 |
| Achromatopsia (no color) | #6F6F6F | 0.192 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4E63E1
#4E63E1
oklch(55.5% 0.192 271.5)
- #8B7000
#8B7000
oklch(55.5% 0.114 92)
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 #4E63E1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.018
- Neon Blue #4361EE ΔE 0.024
- Warm Blue #4B57DB ΔE 0.030
- Dark Periwinkle #665FD1 ΔE 0.040
- Azul #1D5DEC ΔE 0.050
- Slate Blue #6A5ACD ΔE 0.050
- Cerulean Blue #056EEE ΔE 0.051
- Light Indigo #6D5ACF ΔE 0.052
Use #4E63E1 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.