#3367CC
Closest named color: Royal Blue (#4169E1). oklch(53.5% 0.167 262), rgb(51, 103, 204).
Aa
White text reads best on this color (5.31:1).
About this color
#3367CC is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.167 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.036 away. White text reads best on it, at 5.31:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 3.95:1 |
| White text | 5.31:1 |
Values
| HEX | #3367CC |
| RGB | rgb(51, 103, 204) |
| HSL | hsl(220, 60%, 50%) |
| OKLCH | oklch(53.5% 0.167 262) |
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 #3367CC | 5.31:1 | AA | Lc -81.4 | Fine for body text |
| Black text on #3367CC | 3.95:1 | AA large text | Lc 28.1 | Dividers and decoration only |
| #3367CC text on white | 5.31:1 | AA | Lc 76.0 | Fine for body text |
| #3367CC text on black | 3.95:1 | AA large text | Lc -25.7 | 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
#A6C1F2
oklch(80.8% 0.076 262.2)
-
Step 400
400
#77A0EB
oklch(70.7% 0.119 261.9)
-
Step 500
500
#5486E5
oklch(63.1% 0.153 262)
-
Step 600
600 (this color)
#3367CC
oklch(53.5% 0.167 262)
-
Step 700
700
#2C5BB7
oklch(49.1% 0.155 262)
-
Step 800
800
#254B94
oklch(42.7% 0.128 261.9)
-
Step 900
900
#233F76
oklch(37.7% 0.1 262.3)
-
Step 950
950
#152545
oklch(26.9% 0.064 262.8)
#3367CC 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) | #2B73D0 | 0.031 |
| Deuteranopia (no green cones) | #0065CA | 0.026 |
| Tritanopia (no blue cones) | #007F90 | 0.130 |
| Achromatopsia (no color) | #6B6B6B | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3367CC
#3367CC
oklch(53.5% 0.167 262)
- #8D6500
#8D6500
oklch(53.4% 0.11 81.3)
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 #3367CC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.036
- Mid Blue #276AB3 ΔE 0.043
- Warm Blue #4B57DB ΔE 0.050
- French Blue #436BAD ΔE 0.053
- Windows Blue #3778BF ΔE 0.054
- Cerulean Blue #056EEE ΔE 0.055
- Neon Blue #4361EE ΔE 0.057
- Azul #1D5DEC ΔE 0.058
Use #3367CC 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.