#3473D7
Closest named color: Royal Blue (#4169E1). oklch(56.8% 0.167 259.4), rgb(52, 115, 215).
Aa
White text reads best on this color (4.58:1).
About this color
#3473D7 is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.167 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.032 away. White text reads best on it, at 4.58:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.57:1 |
| White text | 4.58:1 |
Values
| HEX | #3473D7 |
| RGB | rgb(52, 115, 215) |
| HSL | hsl(217, 67%, 52%) |
| OKLCH | oklch(56.8% 0.167 259.4) |
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 #3473D7 | 4.58:1 | AA | Lc -76.9 | Fine for body text |
| Black text on #3473D7 | 4.57:1 | AA | Lc 32.7 | Non-text elements, placeholder text |
| #3473D7 text on white | 4.58:1 | AA | Lc 71.4 | Content text, not long reading |
| #3473D7 text on black | 4.57:1 | AA | Lc -30.3 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF9
oklch(93.7% 0.022 256.7)
-
Step 200
200
#C9DAF5
oklch(88.4% 0.042 259.6)
-
Step 300
300
#A4C2F2
oklch(80.9% 0.076 259.7)
-
Step 400
400
#73A1EB
oklch(70.7% 0.12 259.6)
-
Step 500
500
#4D88E5
oklch(63.2% 0.153 259.2)
-
Step 600
600 (this color)
#3473D7
oklch(56.8% 0.167 259.4)
-
Step 700
700
#235CB7
oklch(49% 0.156 259.6)
-
Step 800
800
#1F4C94
oklch(42.7% 0.129 259.5)
-
Step 900
900
#1E4076
oklch(37.7% 0.101 259.3)
-
Step 950
950
#122645
oklch(27% 0.064 258.9)
#3473D7 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) | #3D7DDB | 0.029 |
| Deuteranopia (no green cones) | #106ED5 | 0.026 |
| Tritanopia (no blue cones) | #008B9A | 0.131 |
| Achromatopsia (no color) | #757575 | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3473D7
#3473D7
oklch(56.8% 0.167 259.4)
- #9B6D00
#9B6D00
oklch(56.7% 0.118 79.4)
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 #3473D7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.032
- Windows Blue #3778BF ΔE 0.042
- Cerulean Blue #056EEE ΔE 0.044
- Clear Blue #247AFD ΔE 0.058
- Neon Blue #4361EE ΔE 0.058
- Water Blue #0E87CC ΔE 0.060
- Mid Blue #276AB3 ΔE 0.061
- French Blue #436BAD ΔE 0.065
Use #3473D7 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.