#363678
Closest named color: Dark Slate Blue (#483D8B). oklch(37.1% 0.11 279.6), rgb(54, 54, 120).
Aa
White text reads best on this color (10.73:1).
About this color
#363678 is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.110 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.048 away. White text reads best on it, at 10.73:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.95:1 |
| White text | 10.73:1 |
Values
| HEX | #363678 |
| RGB | rgb(54, 54, 120) |
| HSL | hsl(240, 38%, 34%) |
| OKLCH | oklch(37.1% 0.11 279.6) |
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 #363678 | 10.73:1 | AAA | Lc -98.6 | Preferred for body text |
| Black text on #363678 | 1.95:1 | Fails | Lc 9.3 | Not readable |
| #363678 text on white | 10.73:1 | AAA | Lc 94.7 | Preferred for body text |
| #363678 text on black | 1.95:1 | 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
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E6E9FA
oklch(93.7% 0.023 277.9)
-
Step 200
200
#D2D7F8
oklch(88.6% 0.046 278.6)
-
Step 300
300
#B5BBF6
oklch(80.8% 0.084 279.8)
-
Step 400
400
#9096F1
oklch(70.6% 0.132 279.6)
-
Step 500
500
#7779EC
oklch(63% 0.169 279.6)
-
Step 600
600
#625FDA
oklch(55.5% 0.183 279.7)
-
Step 700
700
#524EBD
oklch(49.2% 0.169 279.8)
-
Step 800
800
#424099
oklch(42.6% 0.141 279.5)
-
Step 900
900 (this color)
#363678
oklch(37.1% 0.11 279.6)
-
Step 950
950
#202147
oklch(26.9% 0.069 279.5)
#363678 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) | #12407A | 0.045 |
| Deuteranopia (no green cones) | #083B77 | 0.047 |
| Tritanopia (no blue cones) | #194551 | 0.096 |
| Achromatopsia (no color) | #3E3E3E | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #363678
#363678
oklch(37.1% 0.11 279.6)
- #4A4000
#4A4000
oklch(37% 0.077 99.2)
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 #363678, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.048
- Twilight Blue #0A437A ΔE 0.052
- Marine Blue #01386A ΔE 0.059
- Cobalt #1E488F ΔE 0.061
- Blueberry #464196 ΔE 0.063
- Prussian Blue #1D3557 ΔE 0.069
- Light Navy #155084 ΔE 0.076
- Marine #042E60 ΔE 0.078
Use #363678 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.