#4978F3
Closest named color: Clear Blue (#247AFD). oklch(60.6% 0.192 265.3), rgb(73, 120, 243).
Aa
Black text reads best on this color (5.26:1).
About this color
#4978F3 is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.192 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.029 away. Black text reads best on it, at 5.26:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.192) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.26:1 |
| White text | 3.98:1 |
Values
| HEX | #4978F3 |
| RGB | rgb(73, 120, 243) |
| HSL | hsl(223, 88%, 62%) |
| OKLCH | oklch(60.6% 0.192 265.3) |
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 #4978F3 | 3.98:1 | AA large text | Lc -72.3 | Content text, not long reading |
| Black text on #4978F3 | 5.26:1 | AA | Lc 37.3 | Non-text elements, placeholder text |
| #4978F3 text on white | 3.98:1 | AA large text | Lc 66.8 | Content text, not long reading |
| #4978F3 text on black | 5.26:1 | AA | Lc -34.9 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E1EAFD
oklch(93.6% 0.028 265.4)
-
Step 200
200
#C9D9FD
oklch(88.5% 0.053 266.4)
-
Step 300
300
#A3C0FE
oklch(80.9% 0.094 265)
-
Step 400
400
#739CFE
oklch(70.6% 0.151 265.6)
-
Step 500
500 (this color)
#4978F3
oklch(60.6% 0.192 265.3)
-
Step 600
600
#3665EB
oklch(55.5% 0.209 265.3)
-
Step 700
700
#2A53CC
oklch(49.1% 0.193 265.4)
-
Step 800
800
#2345A5
oklch(42.7% 0.16 265.3)
-
Step 900
900
#203B83
oklch(37.6% 0.126 265.3)
-
Step 950
950
#13234D
oklch(26.9% 0.08 265.6)
#4978F3 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) | #2B87F7 | 0.039 |
| Deuteranopia (no green cones) | #0078F1 | 0.038 |
| Tritanopia (no blue cones) | #0095AA | 0.154 |
| Achromatopsia (no color) | #7F7F7F | 0.192 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4978F3
#4978F3
oklch(60.6% 0.192 265.3)
- #A47B00
#A47B00
oklch(60.7% 0.124 85.1)
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 #4978F3, closest first.
No curated palette has a color within ΔE 0.04 of #4978F3.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.029
- Cornflower #6A79F7 ΔE 0.038
- Royal Blue #4169E1 ΔE 0.046
- Cerulean Blue #056EEE ΔE 0.051
- Soft Blue #6488EA ΔE 0.056
- Neon Blue #4361EE ΔE 0.057
- Dodger Blue #1E90FF ΔE 0.061
- Dark Sky Blue #448EE4 ΔE 0.064
Use #4978F3 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.