#363A67
Closest named color: Prussian Blue (#1D3557). oklch(36.8% 0.077 278), rgb(54, 58, 103).
Aa
White text reads best on this color (10.72:1).
About this color
#363A67 is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.077 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.049 away. White text reads best on it, at 10.72:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.95:1 |
| White text | 10.72:1 |
Values
| HEX | #363A67 |
| RGB | rgb(54, 58, 103) |
| HSL | hsl(235, 31%, 31%) |
| OKLCH | oklch(36.8% 0.077 278) |
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 #363A67 | 10.72:1 | AAA | Lc -98.7 | Preferred for body text |
| Black text on #363A67 | 1.95:1 | Fails | Lc 9.1 | Not readable |
| #363A67 text on white | 10.72:1 | AAA | Lc 94.8 | Preferred for body text |
| #363A67 text on black | 1.95:1 | Fails | Lc -7.8 | 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
#E7E9F5
oklch(93.6% 0.016 278.5)
-
Step 200
200
#D4D8EF
oklch(88.6% 0.032 277.9)
-
Step 300
300
#B7BEE6
oklch(80.9% 0.057 277.3)
-
Step 400
400
#939BDA
oklch(70.7% 0.092 278.2)
-
Step 500
500
#7981D0
oklch(63.1% 0.119 278)
-
Step 600
600
#6369BD
oklch(55.6% 0.129 278.2)
-
Step 700
700
#5257A3
oklch(49% 0.12 278.1)
-
Step 800
800
#434884
oklch(42.7% 0.099 277.8)
-
Step 900
900 (this color)
#363A67
oklch(36.8% 0.077 278)
-
Step 950
950
#21243E
oklch(27.1% 0.048 277.6)
#363A67 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) | #294069 | 0.023 |
| Deuteranopia (no green cones) | #263C66 | 0.023 |
| Tritanopia (no blue cones) | #25434B | 0.068 |
| Achromatopsia (no color) | #3E3E3E | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #363A67
#363A67
oklch(36.8% 0.077 278)
- #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 #363A67, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.049
- Dark Grey Blue #29465B ΔE 0.049
- Twilight Blue #0A437A ΔE 0.053
- Marine Blue #01386A ΔE 0.054
- Dark Blue Grey #1F3B4D ΔE 0.058
- Charcoal #264653 ΔE 0.061
- Dark Slate Blue #483D8B ΔE 0.068
- Onyx #343A40 ΔE 0.070
Use #363A67 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.