#3F4EC4
Closest named color: Blue With A Hint Of Purple (#533CC6). oklch(48.5% 0.183 272.1), rgb(63, 78, 196).
Aa
White text reads best on this color (6.77:1).
About this color
#3F4EC4 is a medium-dark, vivid blue. In OKLCH its lightness is 48%, its chroma 0.183 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Blue With A Hint Of Purple (#533CC6), ΔE 0.044 away. White text reads best on it, at 6.77:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.183) |
| Temperature | cool |
| Nearest name | Blue With A Hint Of Purple (#533CC6) |
| Black text | 3.09:1 |
| White text | 6.77:1 |
Values
| HEX | #3F4EC4 |
| RGB | rgb(63, 78, 196) |
| HSL | hsl(233, 53%, 51%) |
| OKLCH | oklch(48.5% 0.183 272.1) |
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 #3F4EC4 | 6.77:1 | AA | Lc -87.9 | Fine for body text |
| Black text on #3F4EC4 | 3.09:1 | AA large text | Lc 21.2 | Dividers and decoration only |
| #3F4EC4 text on white | 6.77:1 | AA | Lc 82.9 | Fine for body text |
| #3F4EC4 text on black | 3.09:1 | AA large text | Lc -19.1 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E4E9FC
oklch(93.6% 0.026 274.1)
-
Step 200
200
#CDD8FB
oklch(88.5% 0.05 271.6)
-
Step 300
300
#ACBEFB
oklch(81% 0.089 271.6)
-
Step 400
400
#8299F8
oklch(70.6% 0.141 272.1)
-
Step 500
500
#657CF5
oklch(63% 0.182 272.1)
-
Step 600
600
#4F62E4
oklch(55.6% 0.197 272.1)
-
Step 700
700 (this color)
#3F4EC4
oklch(48.5% 0.183 272.1)
-
Step 800
800
#3542A0
oklch(42.6% 0.152 272.3)
-
Step 900
900
#2D397F
oklch(37.6% 0.118 272.1)
-
Step 950
950
#1A224A
oklch(26.9% 0.075 272)
#3F4EC4 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) | #0061C8 | 0.054 |
| Deuteranopia (no green cones) | #0055C2 | 0.043 |
| Tritanopia (no blue cones) | #006C81 | 0.151 |
| Achromatopsia (no color) | #5B5B5B | 0.184 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F4EC4
#3F4EC4
oklch(48.5% 0.183 272.1)
- #735C00
#735C00
oklch(48.4% 0.099 91.8)
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 #3F4EC4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue With A Hint Of Purple #533CC6 ΔE 0.044
- Blue Blue #2242C7 ΔE 0.045
- Warm Blue #4B57DB ΔE 0.045
- Majorelle Blue #3F37C9 ΔE 0.048
- Blurple #5539CC ΔE 0.050
- Bluey Purple #6241C7 ΔE 0.056
- Iris #6258C4 ΔE 0.058
- Azul #1D5DEC ΔE 0.072
Use #3F4EC4 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.