#4A78EF
Closest named color: Clear Blue (#247AFD). oklch(60.4% 0.186 265.3), rgb(74, 120, 239).
Aa
Black text reads best on this color (5.22:1).
About this color
#4A78EF is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.186 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.032 away. Black text reads best on it, at 5.22:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.186) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.22:1 |
| White text | 4.01:1 |
Values
| HEX | #4A78EF |
| RGB | rgb(74, 120, 239) |
| HSL | hsl(223, 84%, 61%) |
| OKLCH | oklch(60.4% 0.186 265.3) |
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 #4A78EF | 4.01:1 | AA large text | Lc -72.6 | Content text, not long reading |
| Black text on #4A78EF | 5.22:1 | AA | Lc 37.0 | Non-text elements, placeholder text |
| #4A78EF text on white | 4.01:1 | AA large text | Lc 67.1 | Content text, not long reading |
| #4A78EF text on black | 5.22:1 | AA | Lc -34.6 | 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
#F1F5FE
oklch(97% 0.013 266.7)
-
Step 100
100
#E1EAFC
oklch(93.6% 0.026 264.4)
-
Step 200
200
#C9D9FC
oklch(88.5% 0.051 265.9)
-
Step 300
300
#A4C0FC
oklch(80.9% 0.091 265)
-
Step 400
400
#749DFB
oklch(70.7% 0.145 265.1)
-
Step 500
500 (this color)
#4A78EF
oklch(60.4% 0.186 265.3)
-
Step 600
600
#3866E8
oklch(55.6% 0.203 265.4)
-
Step 700
700
#2B54C9
oklch(49.1% 0.188 265.2)
-
Step 800
800
#2446A3
oklch(42.8% 0.156 265.1)
-
Step 900
900
#213C81
oklch(37.7% 0.121 265)
-
Step 950
950
#14244C
oklch(27.1% 0.077 265.2)
#4A78EF 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) | #3187F3 | 0.039 |
| Deuteranopia (no green cones) | #0078ED | 0.039 |
| Tritanopia (no blue cones) | #0094A8 | 0.151 |
| Achromatopsia (no color) | #7F7F7F | 0.186 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4A78EF
#4A78EF
oklch(60.4% 0.186 265.3)
- #A37A00
#A37A00
oklch(60.3% 0.124 84.9)
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 #4A78EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.032
- Cornflower #6A79F7 ΔE 0.039
- Royal Blue #4169E1 ΔE 0.044
- Cerulean Blue #056EEE ΔE 0.051
- Soft Blue #6488EA ΔE 0.054
- Neon Blue #4361EE ΔE 0.057
- Dark Sky Blue #448EE4 ΔE 0.062
- Dodger Blue #1E90FF ΔE 0.063
Use #4A78EF 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.