#353B7B
Closest named color: Dark Slate Blue (#483D8B). oklch(38.3% 0.107 276.1), rgb(53, 59, 123).
Aa
White text reads best on this color (10.17:1).
About this color
#353B7B is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.107 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.041 away. White text reads best on it, at 10.17:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.06:1 |
| White text | 10.17:1 |
Values
| HEX | #353B7B |
| RGB | rgb(53, 59, 123) |
| HSL | hsl(235, 40%, 35%) |
| OKLCH | oklch(38.3% 0.107 276.1) |
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 #353B7B | 10.17:1 | AAA | Lc -97.5 | Preferred for body text |
| Black text on #353B7B | 2.06:1 | Fails | Lc 10.5 | Not readable |
| #353B7B text on white | 10.17:1 | AAA | Lc 93.4 | Preferred for body text |
| #353B7B text on black | 2.06:1 | Fails | Lc -9.1 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FA
oklch(93.6% 0.023 275.4)
-
Step 200
200
#D1D7F7
oklch(88.5% 0.044 277.1)
-
Step 300
300
#B2BDF5
oklch(80.9% 0.08 275.8)
-
Step 400
400
#8B98F0
oklch(70.6% 0.129 276.2)
-
Step 500
500
#717CEB
oklch(63.1% 0.165 276.3)
-
Step 600
600
#5B63D9
oklch(55.7% 0.178 276.1)
-
Step 700
700
#4B51BC
oklch(49.1% 0.165 276)
-
Step 800
800
#3D4398
oklch(42.7% 0.137 275.9)
-
Step 900
900 (this color)
#353B7B
oklch(38.3% 0.107 276.1)
-
Step 950
950
#1E2247
oklch(27% 0.068 276.2)
#353B7B 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) | #1B447D | 0.035 |
| Deuteranopia (no green cones) | #113E7A | 0.038 |
| Tritanopia (no blue cones) | #124955 | 0.094 |
| Achromatopsia (no color) | #414141 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #353B7B
#353B7B
oklch(38.3% 0.107 276.1)
- #504200
#504200
oklch(38.2% 0.079 95.3)
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 #353B7B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.041
- Twilight Blue #0A437A ΔE 0.044
- Cobalt #1E488F ΔE 0.049
- Blueberry #464196 ΔE 0.055
- Marine Blue #01386A ΔE 0.061
- Light Navy #155084 ΔE 0.063
- Dusk Blue #26538D ΔE 0.070
- Dark Grey Blue #29465B ΔE 0.072
Use #353B7B 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.