#4978ED
Closest named color: Clear Blue (#247AFD). oklch(60.2% 0.184 264.9), rgb(73, 120, 237).
Aa
Black text reads best on this color (5.19:1).
About this color
#4978ED is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.184 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.034 away. Black text reads best on it, at 5.19:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.184) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.19:1 |
| White text | 4.04:1 |
Values
| HEX | #4978ED |
| RGB | rgb(73, 120, 237) |
| HSL | hsl(223, 82%, 61%) |
| OKLCH | oklch(60.2% 0.184 264.9) |
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 #4978ED | 4.04:1 | AA large text | Lc -72.8 | Content text, not long reading |
| Black text on #4978ED | 5.19:1 | AA | Lc 36.8 | Non-text elements, placeholder text |
| #4978ED text on white | 4.04:1 | AA large text | Lc 67.3 | Content text, not long reading |
| #4978ED text on black | 5.19:1 | AA | Lc -34.4 | 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
#E1EAFC
oklch(93.6% 0.026 264.4)
-
Step 200
200
#C9D9FB
oklch(88.4% 0.05 265.4)
-
Step 300
300
#A4C0FC
oklch(80.9% 0.091 265)
-
Step 400
400
#749DFA
oklch(70.7% 0.144 265)
-
Step 500
500 (this color)
#4978ED
oklch(60.2% 0.184 264.9)
-
Step 600
600
#3767E6
oklch(55.6% 0.2 264.9)
-
Step 700
700
#2A55C8
oklch(49.1% 0.186 264.7)
-
Step 800
800
#2446A2
oklch(42.7% 0.154 265)
-
Step 900
900
#213C80
oklch(37.6% 0.12 264.9)
-
Step 950
950
#14244B
oklch(27.1% 0.075 265)
#4978ED 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) | #3486F1 | 0.036 |
| Deuteranopia (no green cones) | #0077EB | 0.039 |
| Tritanopia (no blue cones) | #0094A7 | 0.150 |
| Achromatopsia (no color) | #7E7E7E | 0.184 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4978ED
#4978ED
oklch(60.2% 0.184 264.9)
- #A27A00
#A27A00
oklch(60.2% 0.123 85.5)
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 #4978ED, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.034
- Cornflower #6A79F7 ΔE 0.041
- Royal Blue #4169E1 ΔE 0.043
- Cerulean Blue #056EEE ΔE 0.050
- Soft Blue #6488EA ΔE 0.055
- Neon Blue #4361EE ΔE 0.057
- Dark Sky Blue #448EE4 ΔE 0.061
- Dodger Blue #1E90FF ΔE 0.063
Use #4978ED 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.