#3368CB
Closest named color: Royal Blue (#4169E1). oklch(53.6% 0.164 261.5), rgb(51, 104, 203).
Aa
White text reads best on this color (5.27:1).
About this color
#3368CB is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.164 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.037 away. White text reads best on it, at 5.27:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.164) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 3.98:1 |
| White text | 5.27:1 |
Values
| HEX | #3368CB |
| RGB | rgb(51, 104, 203) |
| HSL | hsl(219, 60%, 50%) |
| OKLCH | oklch(53.6% 0.164 261.5) |
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 #3368CB | 5.27:1 | AA | Lc -81.1 | Fine for body text |
| Black text on #3368CB | 3.98:1 | AA large text | Lc 28.3 | Dividers and decoration only |
| #3368CB text on white | 5.27:1 | AA | Lc 75.8 | Fine for body text |
| #3368CB text on black | 3.98:1 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF9
oklch(93.5% 0.022 263.2)
-
Step 200
200
#CADAF5
oklch(88.5% 0.041 260.9)
-
Step 300
300
#A6C2F1
oklch(81% 0.073 260.7)
-
Step 400
400
#77A0EA
oklch(70.7% 0.118 261.7)
-
Step 500
500
#5487E4
oklch(63.2% 0.151 261.4)
-
Step 600
600 (this color)
#3368CB
oklch(53.6% 0.164 261.5)
-
Step 700
700
#2B5CB6
oklch(49.2% 0.153 261.3)
-
Step 800
800
#254B93
oklch(42.7% 0.127 261.7)
-
Step 900
900
#223F75
oklch(37.6% 0.099 261.6)
-
Step 950
950
#152645
oklch(27.2% 0.062 261.5)
#3368CB 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) | #2F73CF | 0.029 |
| Deuteranopia (no green cones) | #0065C9 | 0.027 |
| Tritanopia (no blue cones) | #008090 | 0.129 |
| Achromatopsia (no color) | #6C6C6C | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3368CB
#3368CB
oklch(53.6% 0.164 261.5)
- #8E6600
#8E6600
oklch(53.7% 0.111 81.6)
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 #3368CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.037
- Mid Blue #276AB3 ΔE 0.040
- Windows Blue #3778BF ΔE 0.051
- French Blue #436BAD ΔE 0.051
- Warm Blue #4B57DB ΔE 0.052
- Cerulean Blue #056EEE ΔE 0.056
- Neon Blue #4361EE ΔE 0.059
- Azul #1D5DEC ΔE 0.061
Use #3368CB 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.