#353673
Closest named color: Twilight Blue (#0A437A). oklch(36.6% 0.102 279.4), rgb(53, 54, 115).
Aa
White text reads best on this color (10.90:1).
About this color
#353673 is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.102 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.051 away. White text reads best on it, at 10.90:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 1.92:1 |
| White text | 10.90:1 |
Values
| HEX | #353673 |
| RGB | rgb(53, 54, 115) |
| HSL | hsl(239, 37%, 33%) |
| OKLCH | oklch(36.6% 0.102 279.4) |
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 #353673 | 10.90:1 | AAA | Lc -98.9 | Preferred for body text |
| Black text on #353673 | 1.92:1 | Fails | Lc 8.9 | Not readable |
| #353673 text on white | 10.90:1 | AAA | Lc 95.0 | Preferred for body text |
| #353673 text on black | 1.92:1 | Fails | Lc -7.6 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E6E9F9
oklch(93.6% 0.022 277.5)
-
Step 200
200
#D3D7F6
oklch(88.6% 0.043 279.7)
-
Step 300
300
#B6BCF2
oklch(80.9% 0.076 279.6)
-
Step 400
400
#9197EC
oklch(70.6% 0.124 279.6)
-
Step 500
500
#787BE6
oklch(63.1% 0.158 279.6)
-
Step 600
600
#6262D4
oklch(55.6% 0.171 279.3)
-
Step 700
700
#5250B7
oklch(49.1% 0.158 279.7)
-
Step 800
800
#434294
oklch(42.6% 0.131 279.8)
-
Step 900
900 (this color)
#353673
oklch(36.6% 0.102 279.4)
-
Step 950
950
#202245
oklch(27% 0.064 278.7)
#353673 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) | #183F75 | 0.039 |
| Deuteranopia (no green cones) | #113A72 | 0.042 |
| Tritanopia (no blue cones) | #1B434F | 0.088 |
| Achromatopsia (no color) | #3D3D3D | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #353673
#353673
oklch(36.6% 0.102 279.4)
- #493F00
#493F00
oklch(36.7% 0.076 99.1)
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 #353673, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.051
- Dark Slate Blue #483D8B ΔE 0.055
- Marine Blue #01386A ΔE 0.055
- Prussian Blue #1D3557 ΔE 0.061
- Cobalt #1E488F ΔE 0.066
- Blueberry #464196 ΔE 0.070
- Dark Grey Blue #29465B ΔE 0.072
- Marine #042E60 ΔE 0.072
Use #353673 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.