#3F48AF
Closest named color: Blueberry (#464196). oklch(45.6% 0.162 274.2), rgb(63, 72, 175).
Aa
White text reads best on this color (7.61:1).
About this color
#3F48AF is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.162 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.043 away. White text reads best on it, at 7.61:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.162) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.75:1 |
| White text | 7.61:1 |
Values
| HEX | #3F48AF |
| RGB | rgb(63, 72, 175) |
| HSL | hsl(235, 47%, 47%) |
| OKLCH | oklch(45.6% 0.162 274.2) |
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 #3F48AF | 7.61:1 | AAA | Lc -90.9 | Preferred for body text |
| Black text on #3F48AF | 2.75:1 | Fails | Lc 18.0 | Dividers and decoration only |
| #3F48AF text on white | 7.61:1 | AAA | Lc 86.0 | Fine for body text |
| #3F48AF text on black | 2.75:1 | Fails | Lc -16.0 | 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 800.
-
Step 50
50
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FD
oklch(93.6% 0.028 274.7)
-
Step 200
200
#CED7FD
oklch(88.4% 0.053 274.8)
-
Step 300
300
#ADBCFE
oklch(80.8% 0.095 274.2)
-
Step 400
400
#8597FE
oklch(70.7% 0.151 274.4)
-
Step 500
500
#6979FC
oklch(63.1% 0.194 274.2)
-
Step 600
600
#535DEB
oklch(55.5% 0.211 274.2)
-
Step 700
700
#454CCD
oklch(49.2% 0.196 274.2)
-
Step 800
800 (this color)
#3F48AF
oklch(45.6% 0.162 274.2)
-
Step 900
900
#2F3783
oklch(37.6% 0.127 274.1)
-
Step 950
950
#1B214D
oklch(27% 0.081 273.9)
#3F48AF 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) | #0059B2 | 0.055 |
| Deuteranopia (no green cones) | #004FAD | 0.047 |
| Tritanopia (no blue cones) | #006174 | 0.136 |
| Achromatopsia (no color) | #545454 | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F48AF
#3F48AF
oklch(45.6% 0.162 274.2)
- #685500
#685500
oklch(45.5% 0.093 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 #3F48AF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.043
- Blue With A Hint Of Purple #533CC6 ΔE 0.051
- Blue Blue #2242C7 ΔE 0.053
- Majorelle Blue #3F37C9 ΔE 0.054
- Sapphire #2138AB ΔE 0.057
- Blurple #5539CC ΔE 0.061
- Dark Slate Blue #483D8B ΔE 0.063
- Cobalt #1E488F ΔE 0.065
Use #3F48AF 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.