#365399
Closest named color: Dusk Blue (#26538D). oklch(45.7% 0.119 265.1), rgb(54, 83, 153).
Aa
White text reads best on this color (7.35:1).
About this color
#365399 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.119 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.026 away. White text reads best on it, at 7.35:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.85:1 |
| White text | 7.35:1 |
Values
| HEX | #365399 |
| RGB | rgb(54, 83, 153) |
| HSL | hsl(222, 48%, 41%) |
| OKLCH | oklch(45.7% 0.119 265.1) |
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 #365399 | 7.35:1 | AAA | Lc -90.2 | Preferred for body text |
| Black text on #365399 | 2.85:1 | Fails | Lc 18.7 | Dividers and decoration only |
| #365399 text on white | 7.35:1 | AAA | Lc 85.3 | Fine for body text |
| #365399 text on black | 2.85:1 | Fails | Lc -16.7 | 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 800.
-
Step 50
50
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF8
oklch(93.6% 0.02 264.5)
-
Step 200
200
#CDD9F4
oklch(88.5% 0.039 266.5)
-
Step 300
300
#ABC1EF
oklch(81% 0.07 264.9)
-
Step 400
400
#7F9FE6
oklch(70.7% 0.111 265.2)
-
Step 500
500
#5F85DF
oklch(63.1% 0.142 265.3)
-
Step 600
600
#466DCD
oklch(55.6% 0.155 265.1)
-
Step 700
700
#385AB1
oklch(49% 0.144 265.4)
-
Step 800
800 (this color)
#365399
oklch(45.7% 0.119 265.1)
-
Step 900
900
#293F73
oklch(37.8% 0.093 265)
-
Step 950
950
#182543
oklch(27% 0.059 265)
#365399 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) | #325B9C | 0.022 |
| Deuteranopia (no green cones) | #215298 | 0.021 |
| Tritanopia (no blue cones) | #00636E | 0.101 |
| Achromatopsia (no color) | #565656 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #365399
#365399
oklch(45.7% 0.119 265.1)
- #6F5200
#6F5200
oklch(45.7% 0.094 84.9)
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 #365399, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.026
- Denim Blue #3B5B92 ΔE 0.029
- Twilight #4E518B ΔE 0.037
- Light Navy Blue #2E5A88 ΔE 0.038
- Dusky Blue #475F94 ΔE 0.045
- Cobalt #1E488F ΔE 0.045
- Light Navy #155084 ΔE 0.048
- Blueberry #464196 ΔE 0.049
Use #365399 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.