#3F49C1
Closest named color: Blue With A Hint Of Purple (#533CC6). oklch(47.3% 0.185 273.3), rgb(63, 73, 193).
Aa
White text reads best on this color (7.15:1).
About this color
#3F49C1 is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.185 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 0.037 away. White text reads best on it, at 7.15:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.185) |
| Temperature | cool |
| Nearest name | Blue With A Hint Of Purple (#533CC6) |
| Black text | 2.93:1 |
| White text | 7.15:1 |
Values
| HEX | #3F49C1 |
| RGB | rgb(63, 73, 193) |
| HSL | hsl(235, 51%, 50%) |
| OKLCH | oklch(47.3% 0.185 273.3) |
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 #3F49C1 | 7.15:1 | AAA | Lc -89.2 | Fine for body text |
| Black text on #3F49C1 | 2.93:1 | Fails | Lc 19.7 | Dividers and decoration only |
| #3F49C1 text on white | 7.15:1 | AAA | Lc 84.3 | Fine for body text |
| #3F49C1 text on black | 2.93:1 | Fails | Lc -17.7 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FC
oklch(93.6% 0.026 274.1)
-
Step 200
200
#CED8FB
oklch(88.6% 0.049 272.8)
-
Step 300
300
#ADBDFB
oklch(80.8% 0.09 273.1)
-
Step 400
400
#8498F9
oklch(70.6% 0.144 273.4)
-
Step 500
500
#687BF6
oklch(63% 0.183 273.4)
-
Step 600
600
#5261E5
oklch(55.7% 0.199 273.2)
-
Step 700
700 (this color)
#3F49C1
oklch(47.3% 0.185 273.3)
-
Step 800
800
#3741A1
oklch(42.6% 0.154 273.4)
-
Step 900
900
#2F3980
oklch(37.8% 0.119 273.3)
-
Step 950
950
#1B224B
oklch(27% 0.076 273)
#3F49C1 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) | #005EC5 | 0.058 |
| Deuteranopia (no green cones) | #0052BF | 0.045 |
| Tritanopia (no blue cones) | #00677E | 0.150 |
| Achromatopsia (no color) | #585858 | 0.186 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F49C1
#3F49C1
oklch(47.3% 0.185 273.3)
- #6E5A00
#6E5A00
oklch(47.4% 0.097 93.9)
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 #3F49C1, 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 0.037
- Majorelle Blue #3F37C9 ΔE 0.038
- Blue Blue #2242C7 ΔE 0.039
- Blurple #5539CC ΔE 0.045
- Bluey Purple #6241C7 ΔE 0.055
- Warm Blue #4B57DB ΔE 0.056
- Iris #6258C4 ΔE 0.066
- Sapphire #2138AB ΔE 0.068
Use #3F49C1 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.