#363A69
Closest named color: Prussian Blue (#1D3557). oklch(36.9% 0.08 278), rgb(54, 58, 105).
Aa
White text reads best on this color (10.68:1).
About this color
#363A69 is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.080 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.051 away. White text reads best on it, at 10.68:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.96:1 |
| White text | 10.68:1 |
Values
| HEX | #363A69 |
| RGB | rgb(54, 58, 105) |
| HSL | hsl(235, 32%, 31%) |
| OKLCH | oklch(36.9% 0.08 278) |
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 #363A69 | 10.68:1 | AAA | Lc -98.6 | Preferred for body text |
| Black text on #363A69 | 1.96:1 | Fails | Lc 9.2 | Not readable |
| #363A69 text on white | 10.68:1 | AAA | Lc 94.7 | Preferred for body text |
| #363A69 text on black | 1.96:1 | Fails | Lc -7.9 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E7E9F6
oklch(93.6% 0.018 279.1)
-
Step 200
200
#D3D8F0
oklch(88.6% 0.033 276.3)
-
Step 300
300
#B7BEE8
oklch(81% 0.06 277.6)
-
Step 400
400
#929BDC
oklch(70.7% 0.096 277.6)
-
Step 500
500
#7981D3
oklch(63.2% 0.123 278)
-
Step 600
600
#6269C0
oklch(55.7% 0.134 277.7)
-
Step 700
700
#5257A6
oklch(49.2% 0.125 278)
-
Step 800
800
#434786
oklch(42.7% 0.103 278.3)
-
Step 900
900 (this color)
#363A69
oklch(36.9% 0.08 278)
-
Step 950
950
#21243F
oklch(27.2% 0.05 277.7)
#363A69 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) | #28406B | 0.024 |
| Deuteranopia (no green cones) | #243C68 | 0.025 |
| Tritanopia (no blue cones) | #24444C | 0.071 |
| Achromatopsia (no color) | #3E3E3E | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #363A69
#363A69
oklch(36.9% 0.08 278)
- #4A3F00
#4A3F00
oklch(36.8% 0.076 98)
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 #363A69, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.051
- Twilight Blue #0A437A ΔE 0.051
- Dark Grey Blue #29465B ΔE 0.052
- Marine Blue #01386A ΔE 0.054
- Dark Blue Grey #1F3B4D ΔE 0.061
- Charcoal #264653 ΔE 0.064
- Dark Slate Blue #483D8B ΔE 0.065
- Cobalt #1E488F ΔE 0.072
Use #363A69 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.