#363CAE
Closest named color: Sapphire (#2138AB). oklch(42.8% 0.178 273.7), rgb(54, 60, 174).
Aa
White text reads best on this color (8.69:1).
About this color
#363CAE is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.178 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.029 away. White text reads best on it, at 8.69:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.178) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.41:1 |
| White text | 8.69:1 |
Values
| HEX | #363CAE |
| RGB | rgb(54, 60, 174) |
| HSL | hsl(237, 53%, 45%) |
| OKLCH | oklch(42.8% 0.178 273.7) |
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 #363CAE | 8.69:1 | AAA | Lc -93.8 | Preferred for body text |
| Black text on #363CAE | 2.41:1 | Fails | Lc 14.8 | Not readable |
| #363CAE text on white | 8.69:1 | AAA | Lc 89.2 | Fine for body text |
| #363CAE text on black | 2.41:1 | Fails | Lc -13.0 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E3E9FF
oklch(93.6% 0.03 273.6)
-
Step 200
200
#CDD7FF
oklch(88.4% 0.056 274.2)
-
Step 300
300
#ADBDFF
oklch(81% 0.095 273.6)
-
Step 400
400
#8397FF
oklch(70.7% 0.153 273.6)
-
Step 500
500
#6778FF
oklch(63% 0.199 273.8)
-
Step 600
600
#5059F7
oklch(55.6% 0.231 273.6)
-
Step 700
700
#4247D7
oklch(49.1% 0.215 273.7)
-
Step 800
800 (this color)
#363CAE
oklch(42.8% 0.178 273.7)
-
Step 900
900
#2D3589
oklch(37.6% 0.138 273.6)
-
Step 950
950
#1A2050
oklch(26.9% 0.087 273.6)
#363CAE 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) | #0051B2 | 0.056 |
| Deuteranopia (no green cones) | #0046AC | 0.042 |
| Tritanopia (no blue cones) | #005A6F | 0.145 |
| Achromatopsia (no color) | #4B4B4B | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #363CAE
#363CAE
oklch(42.8% 0.178 273.7)
- #5F4E00
#5F4E00
oklch(42.9% 0.088 94.5)
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 #363CAE, closest first.
No curated palette has a color within ΔE 0.04 of #363CAE.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.029
- Majorelle Blue #3F37C9 ΔE 0.045
- Blue Blue #2242C7 ΔE 0.046
- Blueberry #464196 ΔE 0.048
- Blue With A Hint Of Purple #533CC6 ΔE 0.058
- Indigo Blue #3A18B1 ΔE 0.058
- Dark Slate Blue #483D8B ΔE 0.064
- Cobalt #1E488F ΔE 0.064
Use #363CAE 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.