#4B78E7
Closest named color: Clear Blue (#247AFD). oklch(59.9% 0.175 265), rgb(75, 120, 231).
Aa
Black text reads best on this color (5.13:1).
About this color
#4B78E7 is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.175 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.041 away. Black text reads best on it, at 5.13:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.175) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.13:1 |
| White text | 4.08:1 |
Values
| HEX | #4B78E7 |
| RGB | rgb(75, 120, 231) |
| HSL | hsl(223, 76%, 60%) |
| OKLCH | oklch(59.9% 0.175 265) |
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 #4B78E7 | 4.08:1 | AA large text | Lc -73.2 | Content text, not long reading |
| Black text on #4B78E7 | 5.13:1 | AA | Lc 36.4 | Non-text elements, placeholder text |
| #4B78E7 text on white | 4.08:1 | AA large text | Lc 67.7 | Content text, not long reading |
| #4B78E7 text on black | 5.13:1 | AA | Lc -34.0 | 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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#CAD9FA
oklch(88.5% 0.048 266)
-
Step 300
300
#A6C0F9
oklch(80.9% 0.086 265.5)
-
Step 400
400
#769DF6
oklch(70.6% 0.138 265.1)
-
Step 500
500 (this color)
#4B78E7
oklch(59.9% 0.175 265)
-
Step 600
600
#3A69E1
oklch(55.7% 0.19 264.7)
-
Step 700
700
#2D56C3
oklch(49% 0.177 264.9)
-
Step 800
800
#26479E
oklch(42.7% 0.147 265)
-
Step 900
900
#233D7D
oklch(37.7% 0.113 264.9)
-
Step 950
950
#152449
oklch(27% 0.072 265.3)
#4B78E7 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) | #3C85EB | 0.033 |
| Deuteranopia (no green cones) | #1077E5 | 0.038 |
| Tritanopia (no blue cones) | #0092A4 | 0.144 |
| Achromatopsia (no color) | #7E7E7E | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B78E7
#4B78E7
oklch(59.9% 0.175 265)
- #A17900
#A17900
oklch(59.9% 0.123 85.3)
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 #4B78E7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.041
- Royal Blue #4169E1 ΔE 0.041
- Cornflower #6A79F7 ΔE 0.044
- Soft Blue #6488EA ΔE 0.053
- Cerulean Blue #056EEE ΔE 0.053
- Dark Sky Blue #448EE4 ΔE 0.058
- Neon Blue #4361EE ΔE 0.059
- Windows Blue #3778BF ΔE 0.066
Use #4B78E7 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.