#3369CE
Closest named color: Royal Blue (#4169E1). oklch(54% 0.167 261.5), rgb(51, 105, 206).
Aa
White text reads best on this color (5.18:1).
About this color
#3369CE is a medium-dark, vivid blue. In OKLCH its lightness is 54%, 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 0.033 away. White text reads best on it, at 5.18:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.05:1 |
| White text | 5.18:1 |
Values
| HEX | #3369CE |
| RGB | rgb(51, 105, 206) |
| HSL | hsl(219, 61%, 50%) |
| OKLCH | oklch(54% 0.167 261.5) |
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 #3369CE | 5.18:1 | AA | Lc -80.6 | Fine for body text |
| Black text on #3369CE | 4.05:1 | AA large text | Lc 28.8 | Dividers and decoration only |
| #3369CE text on white | 5.18:1 | AA | Lc 75.2 | Fine for body text |
| #3369CE text on black | 4.05:1 | AA large text | Lc -26.5 | 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
#CADAF6
oklch(88.5% 0.042 261.7)
-
Step 300
300
#A6C2F2
oklch(81% 0.075 261.1)
-
Step 400
400
#76A0EB
oklch(70.6% 0.12 261.5)
-
Step 500
500
#5386E5
oklch(63% 0.154 261.7)
-
Step 600
600 (this color)
#3369CE
oklch(54% 0.167 261.5)
-
Step 700
700
#2A5BB7
oklch(49% 0.155 261.5)
-
Step 800
800
#244B94
oklch(42.7% 0.128 261.5)
-
Step 900
900
#223F76
oklch(37.6% 0.1 261.9)
-
Step 950
950
#142545
oklch(26.9% 0.064 261.9)
#3369CE 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) | #2E74D2 | 0.028 |
| Deuteranopia (no green cones) | #0066CC | 0.027 |
| Tritanopia (no blue cones) | #008192 | 0.130 |
| Achromatopsia (no color) | #6D6D6D | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3369CE
#3369CE
oklch(54% 0.167 261.5)
- #8F6700
#8F6700
oklch(54.1% 0.111 81.8)
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 #3369CE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.033
- Mid Blue #276AB3 ΔE 0.045
- Windows Blue #3778BF ΔE 0.051
- Cerulean Blue #056EEE ΔE 0.051
- Warm Blue #4B57DB ΔE 0.052
- French Blue #436BAD ΔE 0.054
- Neon Blue #4361EE ΔE 0.055
- Azul #1D5DEC ΔE 0.058
Use #3369CE 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.