#363BA5
Closest named color: Sapphire (#2138AB). oklch(41.8% 0.167 274.4), rgb(54, 59, 165).
Aa
White text reads best on this color (9.02:1).
About this color
#363BA5 is a dark, vivid blue. In OKLCH its lightness is 42%, its chroma 0.167 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 9.02:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.32:1 |
| White text | 9.02:1 |
Values
| HEX | #363BA5 |
| RGB | rgb(54, 59, 165) |
| HSL | hsl(237, 51%, 43%) |
| OKLCH | oklch(41.8% 0.167 274.4) |
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 #363BA5 | 9.02:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #363BA5 | 2.32:1 | Fails | Lc 13.8 | Not readable |
| #363BA5 text on white | 9.02:1 | AAA | Lc 90.2 | Preferred for body text |
| #363BA5 text on black | 2.32:1 | Fails | Lc -12.1 | 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
#F3F5FF
oklch(97.2% 0.013 277.1)
-
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
#8597FF
oklch(70.8% 0.153 274.4)
-
Step 500
500
#6978FF
oklch(63.1% 0.199 274.4)
-
Step 600
600
#545CEF
oklch(55.7% 0.217 274.5)
-
Step 700
700
#454AD0
oklch(49.1% 0.202 274.5)
-
Step 800
800 (this color)
#363BA5
oklch(41.8% 0.167 274.4)
-
Step 900
900
#2F3685
oklch(37.6% 0.131 274.4)
-
Step 950
950
#1B214E
oklch(27.1% 0.082 273.9)
#363BA5 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) | #004EA8 | 0.054 |
| Deuteranopia (no green cones) | #0044A3 | 0.043 |
| Tritanopia (no blue cones) | #00566A | 0.137 |
| Achromatopsia (no color) | #494949 | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #363BA5
#363BA5
oklch(41.8% 0.167 274.4)
- #5C4B00
#5C4B00
oklch(41.8% 0.086 94)
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 #363BA5, closest first.
No curated palette has a color within ΔE 0.04 of #363BA5.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.029
- Blueberry #464196 ΔE 0.039
- Dark Slate Blue #483D8B ΔE 0.052
- Cobalt #1E488F ΔE 0.054
- Majorelle Blue #3F37C9 ΔE 0.059
- Indigo Blue #3A18B1 ΔE 0.059
- Blue Blue #2242C7 ΔE 0.059
- Blue With A Hint Of Purple #533CC6 ΔE 0.069
Use #363BA5 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.