#3066D4
Closest named color: Royal Blue (#4169E1). oklch(53.7% 0.179 262.4), rgb(48, 102, 212).
Aa
White text reads best on this color (5.28:1).
About this color
#3066D4 is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.179 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.027 away. White text reads best on it, at 5.28:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.179) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 3.97:1 |
| White text | 5.28:1 |
Values
| HEX | #3066D4 |
| RGB | rgb(48, 102, 212) |
| HSL | hsl(220, 66%, 51%) |
| OKLCH | oklch(53.7% 0.179 262.4) |
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 #3066D4 | 5.28:1 | AA | Lc -81.1 | Fine for body text |
| Black text on #3066D4 | 3.97:1 | AA large text | Lc 28.3 | Dividers and decoration only |
| #3066D4 text on white | 5.28:1 | AA | Lc 75.7 | Fine for body text |
| #3066D4 text on black | 3.97:1 | AA large text | Lc -26.0 | Dividers and decoration only |
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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAFA
oklch(93.6% 0.023 264.5)
-
Step 200
200
#C9DAF8
oklch(88.5% 0.045 261.9)
-
Step 300
300
#A5C1F6
oklch(80.9% 0.081 263)
-
Step 400
400
#749FF1
oklch(70.6% 0.13 262.5)
-
Step 500
500
#5185EC
oklch(63.1% 0.165 262.5)
-
Step 600
600 (this color)
#3066D4
oklch(53.7% 0.179 262.4)
-
Step 700
700
#2859BD
oklch(49% 0.167 262.4)
-
Step 800
800
#224A99
oklch(42.8% 0.137 262.1)
-
Step 900
900
#213E7A
oklch(37.6% 0.108 262.9)
-
Step 950
950
#132547
oklch(26.9% 0.068 261.9)
#3066D4 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) | #1974D8 | 0.036 |
| Deuteranopia (no green cones) | #0065D2 | 0.023 |
| Tritanopia (no blue cones) | #008193 | 0.141 |
| Achromatopsia (no color) | #6C6C6C | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3066D4
#3066D4
oklch(53.7% 0.179 262.4)
- #8D6600
#8D6600
oklch(53.6% 0.11 82.2)
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 #3066D4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.027
- Warm Blue #4B57DB ΔE 0.043
- Cerulean Blue #056EEE ΔE 0.044
- Neon Blue #4361EE ΔE 0.045
- Azul #1D5DEC ΔE 0.046
- Mid Blue #276AB3 ΔE 0.055
- Dark Periwinkle #665FD1 ΔE 0.062
- Bright Blue #0165FC ΔE 0.063
Use #3066D4 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.