#3C73EA
Closest named color: Royal Blue (#4169E1). oklch(58.4% 0.19 263.1), rgb(60, 115, 234).
Aa
Black text reads best on this color (4.83:1).
About this color
#3C73EA is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.190 and its hue 263°. 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 4.83:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.190) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.83:1 |
| White text | 4.34:1 |
Values
| HEX | #3C73EA |
| RGB | rgb(60, 115, 234) |
| HSL | hsl(221, 81%, 58%) |
| OKLCH | oklch(58.4% 0.19 263.1) |
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 #3C73EA | 4.34:1 | AA large text | Lc -75.1 | Fine for body text |
| Black text on #3C73EA | 4.83:1 | AA | Lc 34.5 | Non-text elements, placeholder text |
| #3C73EA text on white | 4.34:1 | AA large text | Lc 69.6 | Content text, not long reading |
| #3C73EA text on black | 4.83:1 | AA | Lc -32.0 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFB
oklch(93.5% 0.025 263.3)
-
Step 200
200
#C9DAF9
oklch(88.5% 0.047 262.5)
-
Step 300
300
#A4C1F9
oklch(81% 0.086 263.3)
-
Step 400
400
#739FF5
oklch(70.8% 0.135 262.8)
-
Step 500
500
#4F84F2
oklch(63.2% 0.175 263)
-
Step 600
600 (this color)
#3C73EA
oklch(58.4% 0.19 263.1)
-
Step 700
700
#2757C3
oklch(49% 0.177 263.3)
-
Step 800
800
#21489D
oklch(42.6% 0.146 263.1)
-
Step 900
900
#203E7D
oklch(37.8% 0.113 263)
-
Step 950
950
#132549
oklch(27.1% 0.071 262.6)
#3C73EA 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) | #2582EE | 0.038 |
| Deuteranopia (no green cones) | #0072E8 | 0.029 |
| Tritanopia (no blue cones) | #0090A4 | 0.149 |
| Achromatopsia (no color) | #797979 | 0.190 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C73EA
#3C73EA
oklch(58.4% 0.19 263.1)
- #9E7400
#9E7400
oklch(58.5% 0.12 83.2)
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 #3C73EA, 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 0.032
- Clear Blue #247AFD ΔE 0.033
- Neon Blue #4361EE ΔE 0.043
- Bright Blue #0165FC ΔE 0.056
- Cornflower #6A79F7 ΔE 0.058
- Azul #1D5DEC ΔE 0.062
- Warm Blue #4B57DB ΔE 0.068
Use #3C73EA 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.