#3945DF
Closest named color: Majorelle Blue (#3F37C9). oklch(49% 0.229 271.1), rgb(57, 69, 223).
Aa
White text reads best on this color (6.79:1).
About this color
#3945DF is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.229 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Majorelle Blue (#3F37C9), ΔE 0.045 away. White text reads best on it, at 6.79:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.229) |
| Temperature | cool |
| Nearest name | Majorelle Blue (#3F37C9) |
| Black text | 3.09:1 |
| White text | 6.79:1 |
Values
| HEX | #3945DF |
| RGB | rgb(57, 69, 223) |
| HSL | hsl(236, 72%, 55%) |
| OKLCH | oklch(49% 0.229 271.1) |
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 #3945DF | 6.79:1 | AA | Lc -87.6 | Fine for body text |
| Black text on #3945DF | 3.09:1 | AA large text | Lc 21.5 | Dividers and decoration only |
| #3945DF text on white | 6.79:1 | AA | Lc 82.6 | Fine for body text |
| #3945DF text on black | 3.09:1 | AA large text | Lc -19.4 | Dividers and decoration only |
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 700.
-
Step 50
50
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E2E9FF
oklch(93.5% 0.031 271.7)
-
Step 200
200
#CBD8FF
oklch(88.5% 0.056 270.7)
-
Step 300
300
#AABEFF
oklch(81% 0.095 271)
-
Step 400
400
#7E99FF
oklch(70.7% 0.152 270.9)
-
Step 500
500
#607BFF
oklch(63.2% 0.197 271)
-
Step 600
600
#4658FF
oklch(55.6% 0.245 271)
-
Step 700
700 (this color)
#3945DF
oklch(49% 0.229 271.1)
-
Step 800
800
#2F3BB4
oklch(42.8% 0.189 271.2)
-
Step 900
900
#28358E
oklch(37.8% 0.147 271.1)
-
Step 950
950
#172053
oklch(27% 0.093 271.2)
#3945DF 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) | #0063E4 | 0.066 |
| Deuteranopia (no green cones) | #0053DC | 0.040 |
| Tritanopia (no blue cones) | #00708D | 0.179 |
| Achromatopsia (no color) | #5B5B5B | 0.230 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3945DF
#3945DF
oklch(49% 0.229 271.1)
- #765D00
#765D00
oklch(49% 0.1 90.4)
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 #3945DF, closest first.
No curated palette has a color within ΔE 0.04 of #3945DF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Majorelle Blue #3F37C9 ΔE 0.045
- Blue Blue #2242C7 ΔE 0.047
- Warm Blue #4B57DB ΔE 0.048
- Blurple #5539CC ΔE 0.053
- Azul #1D5DEC ΔE 0.054
- Light Royal Blue #3A2EFE ΔE 0.055
- Blue With A Hint Of Purple #533CC6 ΔE 0.055
- Purpley Blue #5F34E7 ΔE 0.058
Use #3945DF 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.