#3F52AF
Closest named color: Blueberry (#464196). oklch(47.6% 0.149 271), rgb(63, 82, 175).
Aa
White text reads best on this color (6.91:1).
About this color
#3F52AF is a medium-dark, vivid blue. In OKLCH its lightness is 48%, its chroma 0.149 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.056 away. White text reads best on it, at 6.91:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.149) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 3.03:1 |
| White text | 6.91:1 |
Values
| HEX | #3F52AF |
| RGB | rgb(63, 82, 175) |
| HSL | hsl(230, 47%, 47%) |
| OKLCH | oklch(47.6% 0.149 271) |
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 #3F52AF | 6.91:1 | AA | Lc -88.6 | Fine for body text |
| Black text on #3F52AF | 3.03:1 | AA large text | Lc 20.4 | Dividers and decoration only |
| #3F52AF text on white | 6.91:1 | AA | Lc 83.6 | Fine for body text |
| #3F52AF text on black | 3.03:1 | AA large text | Lc -18.4 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4E9F8
oklch(93.5% 0.021 271.2)
-
Step 200
200
#CFD8F5
oklch(88.4% 0.041 271.9)
-
Step 300
300
#AFBFF0
oklch(80.9% 0.072 270.6)
-
Step 400
400
#869CE9
oklch(70.7% 0.116 271.1)
-
Step 500
500
#6981E2
oklch(63% 0.148 271.1)
-
Step 600
600
#5269D0
oklch(55.7% 0.16 270.9)
-
Step 700
700 (this color)
#3F52AF
oklch(47.6% 0.149 271)
-
Step 800
800
#374792
oklch(42.7% 0.124 271.2)
-
Step 900
900
#2F3D74
oklch(37.8% 0.095 270.5)
-
Step 950
950
#1C2444
oklch(27.1% 0.06 271.3)
#3F52AF 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) | #175FB2 | 0.043 |
| Deuteranopia (no green cones) | #0055AD | 0.043 |
| Tritanopia (no blue cones) | #006878 | 0.127 |
| Achromatopsia (no color) | #5A5A5A | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F52AF
#3F52AF
oklch(47.6% 0.149 271)
- #715900
#715900
oklch(47.5% 0.097 90.5)
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 #3F52AF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.056
- Denim Blue #3B5B92 ΔE 0.056
- Twilight #4E518B ΔE 0.061
- Dusky Blue #475F94 ΔE 0.062
- Iris #6258C4 ΔE 0.063
- Dusk Blue #26538D ΔE 0.063
- Mid Blue #276AB3 ΔE 0.064
- Blue With A Hint Of Purple #533CC6 ΔE 0.065
Use #3F52AF 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.