#3365BB
Closest named color: Mid Blue (#276AB3). oklch(51.8% 0.146 260.5), rgb(51, 101, 187).
Aa
White text reads best on this color (5.64:1).
About this color
#3365BB is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.146 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.021 away. White text reads best on it, at 5.64:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.146) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.71:1 |
| White text | 5.64:1 |
Values
| HEX | #3365BB |
| RGB | rgb(51, 101, 187) |
| HSL | hsl(218, 57%, 47%) |
| OKLCH | oklch(51.8% 0.146 260.5) |
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 #3365BB | 5.64:1 | AA | Lc -83.2 | Fine for body text |
| Black text on #3365BB | 3.71:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #3365BB text on white | 5.64:1 | AA | Lc 77.9 | Fine for body text |
| #3365BB text on black | 3.71:1 | AA large text | Lc -23.9 | 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 700.
-
Step 50
50
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF8
oklch(93.5% 0.021 261.8)
-
Step 200
200
#CBDAF4
oklch(88.5% 0.039 261.5)
-
Step 300
300
#A7C2EF
oklch(81% 0.07 260.6)
-
Step 400
400
#77A1E7
oklch(70.7% 0.113 260.3)
-
Step 500
500
#5488E0
oklch(63.2% 0.144 260.3)
-
Step 600
600
#396FCE
oklch(55.5% 0.158 260.8)
-
Step 700
700 (this color)
#3365BB
oklch(51.8% 0.146 260.5)
-
Step 800
800
#254C90
oklch(42.7% 0.121 260.6)
-
Step 900
900
#224073
oklch(37.7% 0.095 260.3)
-
Step 950
950
#152643
oklch(27% 0.059 260.5)
#3365BB 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) | #386EBE | 0.026 |
| Deuteranopia (no green cones) | #1B61B9 | 0.022 |
| Tritanopia (no blue cones) | #007987 | 0.115 |
| Achromatopsia (no color) | #676767 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3365BB
#3365BB
oklch(51.8% 0.146 260.5)
- #886000
#886000
oklch(51.8% 0.107 80.2)
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 #3365BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.021
- French Blue #436BAD ΔE 0.034
- Windows Blue #3778BF ΔE 0.053
- Flat Blue #3C73A8 ΔE 0.055
- Royal Blue #4169E1 ΔE 0.062
- Muted Blue #3B719F ΔE 0.062
- Dusky Blue #475F94 ΔE 0.063
- Iris #6258C4 ΔE 0.064
Use #3365BB 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.