#355299
Closest named color: Dusk Blue (#26538D). oklch(45.4% 0.121 265.2), rgb(53, 82, 153).
Aa
White text reads best on this color (7.45:1).
About this color
#355299 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.121 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 7.45:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.81:1 |
| White text | 7.45:1 |
Values
| HEX | #355299 |
| RGB | rgb(53, 82, 153) |
| HSL | hsl(223, 49%, 40%) |
| OKLCH | oklch(45.4% 0.121 265.2) |
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 #355299 | 7.45:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #355299 | 2.81:1 | Fails | Lc 18.4 | Dividers and decoration only |
| #355299 text on white | 7.45:1 | AAA | Lc 85.6 | Fine for body text |
| #355299 text on black | 2.81:1 | Fails | Lc -16.4 | 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
#ABC0EF
oklch(80.8% 0.071 266)
-
Step 400
400
#7E9FE7
oklch(70.7% 0.112 264.9)
-
Step 500
500
#5E85E0
oklch(63.1% 0.144 265.1)
-
Step 600
600
#466DCE
oklch(55.7% 0.156 265.2)
-
Step 700
700
#375AB2
oklch(49% 0.146 265.1)
-
Step 800
800 (this color)
#355299
oklch(45.4% 0.121 265.2)
-
Step 900
900
#293F73
oklch(37.8% 0.093 265)
-
Step 950
950
#182543
oklch(27% 0.059 265)
#355299 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) | #2F5A9C | 0.022 |
| Deuteranopia (no green cones) | #1E5198 | 0.022 |
| Tritanopia (no blue cones) | #00626E | 0.101 |
| Achromatopsia (no color) | #555555 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #355299
#355299
oklch(45.4% 0.121 265.2)
- #6E5100
#6E5100
oklch(45.3% 0.093 84.6)
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 #355299, 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 0.032
- Twilight #4E518B ΔE 0.039
- Light Navy Blue #2E5A88 ΔE 0.040
- Cobalt #1E488F ΔE 0.042
- Light Navy #155084 ΔE 0.047
- Blueberry #464196 ΔE 0.047
- Dusky Blue #475F94 ΔE 0.048
Use #355299 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.