#4873E1
Closest named color: Royal Blue (#4169E1). oklch(58.3% 0.174 265.3), rgb(72, 115, 225).
Aa
Black text reads best on this color (4.81:1).
About this color
#4873E1 is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.174 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.027 away. Black text reads best on it, at 4.81:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.174) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.81:1 |
| White text | 4.36:1 |
Values
| HEX | #4873E1 |
| RGB | rgb(72, 115, 225) |
| HSL | hsl(223, 72%, 58%) |
| OKLCH | oklch(58.3% 0.174 265.3) |
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 #4873E1 | 4.36:1 | AA large text | Lc -75.3 | Fine for body text |
| Black text on #4873E1 | 4.81:1 | AA | Lc 34.2 | Non-text elements, placeholder text |
| #4873E1 text on white | 4.36:1 | AA large text | Lc 69.9 | Content text, not long reading |
| #4873E1 text on black | 4.81:1 | AA | Lc -31.8 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFA
oklch(93.6% 0.023 266.9)
-
Step 200
200
#CBD9F7
oklch(88.4% 0.044 265.6)
-
Step 300
300
#A8C0F4
oklch(80.8% 0.079 265.4)
-
Step 400
400
#7B9EEF
oklch(70.7% 0.125 265.6)
-
Step 500
500
#5A84E9
oklch(63.2% 0.159 265.2)
-
Step 600
600 (this color)
#4873E1
oklch(58.3% 0.174 265.3)
-
Step 700
700
#3358BB
oklch(49.1% 0.162 265.4)
-
Step 800
800
#2A4997
oklch(42.7% 0.133 265)
-
Step 900
900
#263E78
oklch(37.7% 0.103 265)
-
Step 950
950
#162547
oklch(27.1% 0.066 264.5)
#4873E1 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) | #3580E5 | 0.034 |
| Deuteranopia (no green cones) | #0072DF | 0.040 |
| Tritanopia (no blue cones) | #008D9F | 0.143 |
| Achromatopsia (no color) | #797979 | 0.174 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4873E1
#4873E1
oklch(58.3% 0.174 265.3)
- #9B7400
#9B7400
oklch(58.2% 0.119 85)
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 #4873E1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.027
- Cerulean Blue #056EEE ΔE 0.046
- Clear Blue #247AFD ΔE 0.048
- Neon Blue #4361EE ΔE 0.050
- Cornflower #6A79F7 ΔE 0.055
- Windows Blue #3778BF ΔE 0.059
- Dark Periwinkle #665FD1 ΔE 0.059
- Soft Blue #6488EA ΔE 0.067
Use #4873E1 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.