#363D8C
Closest named color: Dark Slate Blue (#483D8B). oklch(40.1% 0.13 275.1), rgb(54, 61, 140).
Aa
White text reads best on this color (9.53:1).
About this color
#363D8C is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.130 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.028 away. White text reads best on it, at 9.53:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.20:1 |
| White text | 9.53:1 |
Values
| HEX | #363D8C |
| RGB | rgb(54, 61, 140) |
| HSL | hsl(235, 44%, 38%) |
| OKLCH | oklch(40.1% 0.13 275.1) |
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 #363D8C | 9.53:1 | AAA | Lc -96.0 | Preferred for body text |
| Black text on #363D8C | 2.20:1 | Fails | Lc 12.2 | Not readable |
| #363D8C text on white | 9.53:1 | AAA | Lc 91.8 | Preferred for body text |
| #363D8C text on black | 2.20:1 | Fails | Lc -10.6 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FD
oklch(93.6% 0.028 274.7)
-
Step 200
200
#CED7FE
oklch(88.5% 0.055 275)
-
Step 300
300
#AEBCFF
oklch(80.9% 0.096 274.9)
-
Step 400
400
#8696FF
oklch(70.7% 0.154 275.2)
-
Step 500
500
#6B77FF
oklch(63.1% 0.199 275.3)
-
Step 600
600
#555BEE
oklch(55.5% 0.217 275)
-
Step 700
700
#474ACF
oklch(49.2% 0.2 275.2)
-
Step 800
800
#393EA7
oklch(42.7% 0.165 274.8)
-
Step 900
900 (this color)
#363D8C
oklch(40.1% 0.13 275.1)
-
Step 950
950
#1C214E
oklch(27.1% 0.082 274.8)
#363D8C 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) | #03498F | 0.047 |
| Deuteranopia (no green cones) | #00428A | 0.045 |
| Tritanopia (no blue cones) | #00505E | 0.113 |
| Achromatopsia (no color) | #454545 | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #363D8C
#363D8C
oklch(40.1% 0.13 275.1)
- #564700
#564700
oklch(40.2% 0.082 95.2)
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 #363D8C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.028
- Blueberry #464196 ΔE 0.032
- Cobalt #1E488F ΔE 0.036
- Twilight Blue #0A437A ΔE 0.054
- Sapphire #2138AB ΔE 0.059
- Dusk Blue #26538D ΔE 0.061
- Light Navy #155084 ΔE 0.061
- Twilight #4E518B ΔE 0.070
Use #363D8C 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.