#363FA4
Closest named color: Blueberry (#464196). oklch(42.4% 0.161 273.5), rgb(54, 63, 164).
Aa
White text reads best on this color (8.73:1).
About this color
#363FA4 is a dark, vivid blue. In OKLCH its lightness is 42%, its chroma 0.161 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.034 away. White text reads best on it, at 8.73:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | vivid (0.161) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.40:1 |
| White text | 8.73:1 |
Values
| HEX | #363FA4 |
| RGB | rgb(54, 63, 164) |
| HSL | hsl(235, 50%, 43%) |
| OKLCH | oklch(42.4% 0.161 273.5) |
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 #363FA4 | 8.73:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #363FA4 | 2.40:1 | Fails | Lc 14.5 | Not readable |
| #363FA4 text on white | 8.73:1 | AAA | Lc 89.5 | Fine for body text |
| #363FA4 text on black | 2.40:1 | Fails | Lc -12.8 | 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 800.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E4E9FD
oklch(93.6% 0.028 274.7)
-
Step 200
200
#CED7FD
oklch(88.4% 0.053 274.8)
-
Step 300
300
#ADBDFE
oklch(81% 0.094 273.5)
-
Step 400
400
#8398FD
oklch(70.8% 0.149 273.2)
-
Step 500
500
#677AFB
oklch(63.1% 0.191 273.3)
-
Step 600
600
#525EEA
oklch(55.5% 0.209 273.7)
-
Step 700
700
#434DCC
oklch(49.2% 0.194 273.4)
-
Step 800
800 (this color)
#363FA4
oklch(42.4% 0.161 273.5)
-
Step 900
900
#2E3883
oklch(37.8% 0.125 273.1)
-
Step 950
950
#1B214C
oklch(26.9% 0.079 273.9)
#363FA4 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) | #0050A7 | 0.051 |
| Deuteranopia (no green cones) | #0046A2 | 0.041 |
| Tritanopia (no blue cones) | #00586B | 0.132 |
| Achromatopsia (no color) | #4B4B4B | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #363FA4
#363FA4
oklch(42.4% 0.161 273.5)
- #5E4D00
#5E4D00
oklch(42.5% 0.087 94.3)
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 #363FA4, closest first.
No curated palette has a color within ΔE 0.04 of #363FA4.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.034
- Sapphire #2138AB ΔE 0.034
- Cobalt #1E488F ΔE 0.048
- Dark Slate Blue #483D8B ΔE 0.049
- Blue Blue #2242C7 ΔE 0.059
- Majorelle Blue #3F37C9 ΔE 0.061
- Indigo Blue #3A18B1 ΔE 0.068
- Dusk Blue #26538D ΔE 0.069
Use #363FA4 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.