#4D73D8
Closest named color: Royal Blue (#4169E1). oklch(57.9% 0.16 266), rgb(77, 115, 216).
Aa
Black text reads best on this color (4.75:1).
About this color
#4D73D8 is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.160 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.034 away. Black text reads best on it, at 4.75:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.160) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.75:1 |
| White text | 4.41:1 |
Values
| HEX | #4D73D8 |
| RGB | rgb(77, 115, 216) |
| HSL | hsl(224, 64%, 57%) |
| OKLCH | oklch(57.9% 0.16 266) |
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 #4D73D8 | 4.41:1 | AA large text | Lc -75.8 | Fine for body text |
| Black text on #4D73D8 | 4.75:1 | AA | Lc 33.8 | Non-text elements, placeholder text |
| #4D73D8 text on white | 4.41:1 | AA large text | Lc 70.3 | Content text, not long reading |
| #4D73D8 text on black | 4.75:1 | AA | Lc -31.4 | 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 600.
-
Step 50
50
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF8
oklch(93.6% 0.02 264.5)
-
Step 200
200
#CDD9F5
oklch(88.5% 0.041 267.1)
-
Step 300
300
#ABC0F0
oklch(80.9% 0.072 266.3)
-
Step 400
400
#7F9EE9
oklch(70.7% 0.116 266.4)
-
Step 500
500
#5F84E2
oklch(63% 0.148 266.1)
-
Step 600
600 (this color)
#4D73D8
oklch(57.9% 0.16 266)
-
Step 700
700
#3859B4
oklch(49% 0.149 266)
-
Step 800
800
#2F4A92
oklch(42.8% 0.123 265.9)
-
Step 900
900
#293E74
oklch(37.6% 0.096 266)
-
Step 950
950
#182544
oklch(27% 0.061 265.4)
#4D73D8 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) | #407FDC | 0.031 |
| Deuteranopia (no green cones) | #2572D6 | 0.034 |
| Tritanopia (no blue cones) | #008A9B | 0.134 |
| Achromatopsia (no color) | #787878 | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4D73D8
#4D73D8
oklch(57.9% 0.16 266)
- #997400
#997400
oklch(58% 0.119 86.3)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes and gradients that use #4D73D8
These curated palettes and gradients contain exactly #4D73D8. Open one to see the full color scheme around it.
Palettes
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.034
- Windows Blue #3778BF ΔE 0.048
- Dark Periwinkle #665FD1 ΔE 0.054
- Cerulean Blue #056EEE ΔE 0.057
- Neon Blue #4361EE ΔE 0.059
- Clear Blue #247AFD ΔE 0.061
- Cornflower #6A79F7 ΔE 0.061
- Water Blue #0E87CC ΔE 0.067
Use #4D73D8 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.