#353A80
Closest named color: Dark Slate Blue (#483D8B). oklch(38.4% 0.116 276.4), rgb(53, 58, 128).
Aa
White text reads best on this color (10.15:1).
About this color
#353A80 is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.116 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.037 away. White text reads best on it, at 10.15:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.06:1 |
| White text | 10.15:1 |
Values
| HEX | #353A80 |
| RGB | rgb(53, 58, 128) |
| HSL | hsl(236, 41%, 35%) |
| OKLCH | oklch(38.4% 0.116 276.4) |
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 #353A80 | 10.15:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #353A80 | 2.06:1 | Fails | Lc 10.6 | Not readable |
| #353A80 text on white | 10.15:1 | AAA | Lc 93.3 | Preferred for body text |
| #353A80 text on black | 2.06:1 | Fails | Lc -9.2 | Not readable |
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 900.
-
Step 50
50
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E5E9FB
oklch(93.6% 0.025 275.9)
-
Step 200
200
#D0D7FA
oklch(88.5% 0.049 276.4)
-
Step 300
300
#B1BCF9
oklch(80.8% 0.087 276.4)
-
Step 400
400
#8A97F6
oklch(70.6% 0.139 276.3)
-
Step 500
500
#707AF3
oklch(63.2% 0.179 276.4)
-
Step 600
600
#5A5FE1
oklch(55.5% 0.194 276.4)
-
Step 700
700
#4B4EC4
oklch(49.2% 0.18 276.4)
-
Step 800
800
#3D419E
oklch(42.8% 0.148 276.3)
-
Step 900
900 (this color)
#353A80
oklch(38.4% 0.116 276.4)
-
Step 950
950
#1E214A
oklch(27% 0.075 277)
#353A80 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) | #114582 | 0.043 |
| Deuteranopia (no green cones) | #013E7F | 0.046 |
| Tritanopia (no blue cones) | #094A57 | 0.102 |
| Achromatopsia (no color) | #414141 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #353A80
#353A80
oklch(38.4% 0.116 276.4)
- #504300
#504300
oklch(38.5% 0.079 96.5)
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 #353A80, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.037
- Cobalt #1E488F ΔE 0.046
- Twilight Blue #0A437A ΔE 0.047
- Blueberry #464196 ΔE 0.049
- Light Navy #155084 ΔE 0.065
- Marine Blue #01386A ΔE 0.066
- Dusk Blue #26538D ΔE 0.070
- Sapphire #2138AB ΔE 0.075
Use #353A80 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.