#3819D4
Closest named color: Majorelle Blue (#3F37C9). oklch(42.7% 0.252 274.8), rgb(56, 25, 212).
Aa
White text reads best on this color (9.30:1).
About this color
#3819D4 is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.252 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Majorelle Blue (#3F37C9), ΔE 0.044 away. White text reads best on it, at 9.30:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.252) |
| Temperature | cool |
| Nearest name | Majorelle Blue (#3F37C9) |
| Black text | 2.25:1 |
| White text | 9.30:1 |
Values
| HEX | #3819D4 |
| RGB | rgb(56, 25, 212) |
| HSL | hsl(250, 79%, 46%) |
| OKLCH | oklch(42.7% 0.252 274.8) |
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 #3819D4 | 9.30:1 | AAA | Lc -94.1 | Preferred for body text |
| Black text on #3819D4 | 2.25:1 | Fails | Lc 14.4 | Not readable |
| #3819D4 text on white | 9.30:1 | AAA | Lc 89.6 | Fine for body text |
| #3819D4 text on black | 2.25:1 | Fails | Lc -12.7 | 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
#CED7FF
oklch(88.5% 0.056 275.2)
-
Step 300
300
#AEBCFF
oklch(80.9% 0.096 274.9)
-
Step 400
400
#8596FF
oklch(70.6% 0.154 274.8)
-
Step 500
500
#6A78FF
oklch(63.2% 0.198 274.8)
-
Step 600
600
#5353FF
oklch(55.6% 0.247 274.8)
-
Step 700
700
#4521FF
oklch(49.1% 0.289 274.7)
-
Step 800
800 (this color)
#3819D4
oklch(42.7% 0.252 274.8)
-
Step 900
900
#2D23A6
oklch(37.6% 0.197 274.8)
-
Step 950
950
#191861
oklch(27% 0.124 274.8)
#3819D4 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) | #004FD9 | 0.086 |
| Deuteranopia (no green cones) | #003ED1 | 0.058 |
| Tritanopia (no blue cones) | #005A7E | 0.191 |
| Achromatopsia (no color) | #474747 | 0.254 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3819D4
#3819D4
oklch(42.7% 0.252 274.8)
- #5E4E00
#5E4E00
oklch(42.8% 0.088 95.4)
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 #3819D4, closest first.
No curated palette has a color within ΔE 0.04 of #3819D4.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Majorelle Blue #3F37C9 ΔE 0.044
- Ultramarine Blue #1805DB ΔE 0.046
- Violet Blue #510AC9 ΔE 0.049
- Indigo Blue #3A18B1 ΔE 0.058
- Blue Blue #2242C7 ΔE 0.060
- Pure Blue #0203E2 ΔE 0.061
- True Blue #010FCC ΔE 0.061
- Medium Blue #0000CD ΔE 0.067
Use #3819D4 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.