#3368BB
Closest named color: Mid Blue (#276AB3). oklch(52.5% 0.142 259.1), rgb(51, 104, 187).
Aa
White text reads best on this color (5.47:1).
About this color
#3368BB is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.142 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.017 away. White text reads best on it, at 5.47:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.142) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.83:1 |
| White text | 5.47:1 |
Values
| HEX | #3368BB |
| RGB | rgb(51, 104, 187) |
| HSL | hsl(217, 57%, 47%) |
| OKLCH | oklch(52.5% 0.142 259.1) |
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 #3368BB | 5.47:1 | AA | Lc -82.3 | Fine for body text |
| Black text on #3368BB | 3.83:1 | AA large text | Lc 27.1 | Dividers and decoration only |
| #3368BB text on white | 5.47:1 | AA | Lc 77.0 | Fine for body text |
| #3368BB text on black | 3.83:1 | AA large text | Lc -24.8 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CBDAF1
oklch(88.4% 0.036 258.9)
-
Step 300
300
#A8C2EB
oklch(80.9% 0.065 259.4)
-
Step 400
400
#7AA2E0
oklch(70.8% 0.101 258.9)
-
Step 500
500
#5789D8
oklch(63.1% 0.131 259.2)
-
Step 600
600 (this color)
#3368BB
oklch(52.5% 0.142 259.1)
-
Step 700
700
#2E5FAA
oklch(49.2% 0.131 258.8)
-
Step 800
800
#274E8A
oklch(42.8% 0.109 258.8)
-
Step 900
900
#24416E
oklch(37.7% 0.085 258.9)
-
Step 950
950
#162641
oklch(27% 0.055 260.3)
#3368BB 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) | #3F70BE | 0.026 |
| Deuteranopia (no green cones) | #2463B9 | 0.020 |
| Tritanopia (no blue cones) | #007B88 | 0.112 |
| Achromatopsia (no color) | #696969 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3368BB
#3368BB
oklch(52.5% 0.142 259.1)
- #8C6100
#8C6100
oklch(52.5% 0.109 78.4)
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 #3368BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.017
- French Blue #436BAD ΔE 0.029
- Windows Blue #3778BF ΔE 0.045
- Flat Blue #3C73A8 ΔE 0.049
- Muted Blue #3B719F ΔE 0.056
- Nice Blue #107AB0 ΔE 0.057
- Royal Blue #4169E1 ΔE 0.061
- Dusky Blue #475F94 ΔE 0.063
Use #3368BB 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.