#4478E6
Closest named color: Royal Blue (#4169E1). oklch(59.5% 0.176 263.1), rgb(68, 120, 230).
Aa
Black text reads best on this color (5.07:1).
About this color
#4478E6 is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.176 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.039 away. Black text reads best on it, at 5.07:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.176) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 5.07:1 |
| White text | 4.13:1 |
Values
| HEX | #4478E6 |
| RGB | rgb(68, 120, 230) |
| HSL | hsl(221, 76%, 58%) |
| OKLCH | oklch(59.5% 0.176 263.1) |
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 #4478E6 | 4.13:1 | AA large text | Lc -73.6 | Content text, not long reading |
| Black text on #4478E6 | 5.07:1 | AA | Lc 36.0 | Non-text elements, placeholder text |
| #4478E6 text on white | 4.13:1 | AA large text | Lc 68.1 | Content text, not long reading |
| #4478E6 text on black | 5.07:1 | AA | Lc -33.6 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFB
oklch(93.5% 0.025 263.3)
-
Step 200
200
#C9DAFA
oklch(88.6% 0.048 263.1)
-
Step 300
300
#A4C1F9
oklch(81% 0.086 263.3)
-
Step 400
400
#729EF6
oklch(70.6% 0.138 263.1)
-
Step 500
500 (this color)
#4478E6
oklch(59.5% 0.176 263.1)
-
Step 600
600
#336AE1
oklch(55.6% 0.191 263)
-
Step 700
700
#2657C4
oklch(49.1% 0.179 263.2)
-
Step 800
800
#21489E
oklch(42.7% 0.147 263.2)
-
Step 900
900
#1F3D7E
oklch(37.6% 0.116 263.3)
-
Step 950
950
#13254A
oklch(27.2% 0.073 262.9)
#4478E6 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) | #3B85EA | 0.033 |
| Deuteranopia (no green cones) | #0876E4 | 0.034 |
| Tritanopia (no blue cones) | #0092A4 | 0.141 |
| Achromatopsia (no color) | #7D7D7D | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4478E6
#4478E6
oklch(59.5% 0.176 263.1)
- #A27700
#A27700
oklch(59.6% 0.123 83.2)
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 #4478E6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.039
- Clear Blue #247AFD ΔE 0.039
- Cerulean Blue #056EEE ΔE 0.048
- Cornflower #6A79F7 ΔE 0.051
- Soft Blue #6488EA ΔE 0.057
- Neon Blue #4361EE ΔE 0.058
- Dark Sky Blue #448EE4 ΔE 0.059
- Windows Blue #3778BF ΔE 0.062
Use #4478E6 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.