#353F84
Closest named color: Dark Slate Blue (#483D8B). oklch(39.8% 0.115 273.8), rgb(53, 63, 132).
Aa
White text reads best on this color (9.56:1).
About this color
#353F84 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.115 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.032 away. White text reads best on it, at 9.56:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.19:1 |
| White text | 9.56:1 |
Values
| HEX | #353F84 |
| RGB | rgb(53, 63, 132) |
| HSL | hsl(232, 43%, 36%) |
| OKLCH | oklch(39.8% 0.115 273.8) |
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 #353F84 | 9.56:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #353F84 | 2.19:1 | Fails | Lc 12.0 | Not readable |
| #353F84 text on white | 9.56:1 | AAA | Lc 91.9 | Preferred for body text |
| #353F84 text on black | 2.19:1 | Fails | Lc -10.5 | 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
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CFD8FA
oklch(88.6% 0.048 273.7)
-
Step 300
300
#AFBDF9
oklch(80.9% 0.086 274.1)
-
Step 400
400
#8699F6
oklch(70.8% 0.138 273.6)
-
Step 500
500
#6A7CF2
oklch(63.1% 0.176 273.7)
-
Step 600
600
#5462E1
oklch(55.7% 0.192 273.7)
-
Step 700
700
#4550C3
oklch(49.1% 0.178 273.7)
-
Step 800
800
#38429E
oklch(42.6% 0.148 273.6)
-
Step 900
900 (this color)
#353F84
oklch(39.8% 0.115 273.8)
-
Step 950
950
#1C2249
oklch(27% 0.072 274)
#353F84 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) | #1A4986 | 0.036 |
| Deuteranopia (no green cones) | #0B4283 | 0.039 |
| Tritanopia (no blue cones) | #004F5B | 0.102 |
| Achromatopsia (no color) | #454545 | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #353F84
#353F84
oklch(39.8% 0.115 273.8)
- #564600
#564600
oklch(39.9% 0.082 94)
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 #353F84, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.032
- Cobalt #1E488F ΔE 0.035
- Blueberry #464196 ΔE 0.040
- Twilight Blue #0A437A ΔE 0.045
- Light Navy #155084 ΔE 0.053
- Dusk Blue #26538D ΔE 0.056
- Twilight #4E518B ΔE 0.066
- Deep Sea Blue #015482 ΔE 0.067
Use #353F84 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.