#3F4BC7
Closest named color: Blue With A Hint Of Purple (#533CC6). oklch(48.2% 0.191 272.7), rgb(63, 75, 199).
Aa
White text reads best on this color (6.90:1).
About this color
#3F4BC7 is a medium-dark, vivid blue. In OKLCH its lightness is 48%, its chroma 0.191 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Blue With A Hint Of Purple (#533CC6), ΔE 0.039 away. White text reads best on it, at 6.90:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.191) |
| Temperature | cool |
| Nearest name | Blue With A Hint Of Purple (#533CC6) |
| Black text | 3.04:1 |
| White text | 6.90:1 |
Values
| HEX | #3F4BC7 |
| RGB | rgb(63, 75, 199) |
| HSL | hsl(235, 55%, 51%) |
| OKLCH | oklch(48.2% 0.191 272.7) |
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 #3F4BC7 | 6.90:1 | AA | Lc -88.3 | Fine for body text |
| Black text on #3F4BC7 | 3.04:1 | AA large text | Lc 20.7 | Dividers and decoration only |
| #3F4BC7 text on white | 6.90:1 | AA | Lc 83.3 | Fine for body text |
| #3F4BC7 text on black | 3.04:1 | AA large text | Lc -18.6 | 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
#CDD8FC
oklch(88.5% 0.051 271.9)
-
Step 300
300
#ACBDFD
oklch(80.9% 0.093 272.7)
-
Step 400
400
#8298FC
oklch(70.6% 0.148 272.7)
-
Step 500
500
#667BF9
oklch(63.1% 0.188 272.8)
-
Step 600
600
#5060E8
oklch(55.6% 0.204 272.7)
-
Step 700
700 (this color)
#3F4BC7
oklch(48.2% 0.191 272.7)
-
Step 800
800
#3541A3
oklch(42.7% 0.157 272.5)
-
Step 900
900
#2D3882
oklch(37.6% 0.124 272.6)
-
Step 950
950
#1A224C
oklch(27.1% 0.078 272.1)
#3F4BC7 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) | #0060CB | 0.057 |
| Deuteranopia (no green cones) | #0054C5 | 0.044 |
| Tritanopia (no blue cones) | #006B82 | 0.155 |
| Achromatopsia (no color) | #5A5A5A | 0.191 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F4BC7
#3F4BC7
oklch(48.2% 0.191 272.7)
- #725C00
#725C00
oklch(48.3% 0.099 92.6)
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 #3F4BC7, 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 0.039
- Blue Blue #2242C7 ΔE 0.040
- Majorelle Blue #3F37C9 ΔE 0.040
- Blurple #5539CC ΔE 0.044
- Warm Blue #4B57DB ΔE 0.046
- Bluey Purple #6241C7 ΔE 0.054
- Iris #6258C4 ΔE 0.063
- Azul #1D5DEC ΔE 0.072
Use #3F4BC7 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.