#353A5E
Closest named color: Prussian Blue (#1D3557). oklch(36.1% 0.063 276.8), rgb(53, 58, 94).
Aa
White text reads best on this color (10.94:1).
About this color
#353A5E is a dark, muted blue. In OKLCH its lightness is 36%, its chroma 0.063 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.040 away. White text reads best on it, at 10.94:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.91:1 |
| White text | 10.94:1 |
Values
| HEX | #353A5E |
| RGB | rgb(53, 58, 94) |
| HSL | hsl(233, 28%, 29%) |
| OKLCH | oklch(36.1% 0.063 276.8) |
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 #353A5E | 10.94:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #353A5E | 1.91:1 | Fails | Lc 8.6 | Not readable |
| #353A5E text on white | 10.94:1 | AAA | Lc 95.3 | Preferred for body text |
| #353A5E text on black | 1.91:1 | Fails | Lc -7.4 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E7E9F3
oklch(93.5% 0.014 277.1)
-
Step 200
200
#D4D8EB
oklch(88.5% 0.026 276.4)
-
Step 300
300
#B8BFDF
oklch(81% 0.046 275.6)
-
Step 400
400
#949DD0
oklch(70.8% 0.075 276.5)
-
Step 500
500
#7A84C3
oklch(63.1% 0.096 276.4)
-
Step 600
600
#646DB0
oklch(55.7% 0.104 276.6)
-
Step 700
700
#535B97
oklch(49.2% 0.096 276.5)
-
Step 800
800
#444A7A
oklch(42.6% 0.08 277)
-
Step 900
900 (this color)
#353A5E
oklch(36.1% 0.063 276.8)
-
Step 950
950
#21253A
oklch(27.1% 0.04 275.2)
#353A5E 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) | #2E3E5F | 0.015 |
| Deuteranopia (no green cones) | #2B3B5D | 0.015 |
| Tritanopia (no blue cones) | #284147 | 0.056 |
| Achromatopsia (no color) | #3C3C3C | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #353A5E
#353A5E
oklch(36.1% 0.063 276.8)
- #473D11
#473D11
oklch(36.1% 0.062 96.2)
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 #353A5E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.040
- Dark Grey Blue #29465B ΔE 0.041
- Dark Blue Grey #1F3B4D ΔE 0.045
- Charcoal #264653 ΔE 0.050
- Onyx #343A40 ΔE 0.054
- Marine Blue #01386A ΔE 0.056
- Gunmetal #293241 ΔE 0.058
- Twilight Blue #0A437A ΔE 0.061
Use #353A5E 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.