#3961C4
Closest named color: Mid Blue (#276AB3). oklch(51.9% 0.161 264.8), rgb(57, 97, 196).
Aa
White text reads best on this color (5.70:1).
About this color
#3961C4 is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.161 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.040 away. White text reads best on it, at 5.70:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.161) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.68:1 |
| White text | 5.70:1 |
Values
| HEX | #3961C4 |
| RGB | rgb(57, 97, 196) |
| HSL | hsl(223, 55%, 50%) |
| OKLCH | oklch(51.9% 0.161 264.8) |
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 #3961C4 | 5.70:1 | AA | Lc -83.4 | Fine for body text |
| Black text on #3961C4 | 3.68:1 | AA large text | Lc 25.9 | Dividers and decoration only |
| #3961C4 text on white | 5.70:1 | AA | Lc 78.2 | Fine for body text |
| #3961C4 text on black | 3.68:1 | AA large text | Lc -23.6 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E2EAFA
oklch(93.6% 0.023 264.5)
-
Step 200
200
#CBD9F7
oklch(88.4% 0.044 265.6)
-
Step 300
300
#A8C0F4
oklch(80.8% 0.079 265.4)
-
Step 400
400
#7A9EEF
oklch(70.7% 0.126 265.1)
-
Step 500
500
#5984E9
oklch(63.1% 0.159 264.9)
-
Step 600
600
#3F6BD7
oklch(55.6% 0.173 264.7)
-
Step 700
700 (this color)
#3961C4
oklch(51.9% 0.161 264.8)
-
Step 800
800
#294997
oklch(42.7% 0.134 264.6)
-
Step 900
900
#253E78
oklch(37.7% 0.104 264.4)
-
Step 950
950
#162546
oklch(27.1% 0.065 264.1)
#3961C4 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) | #266DC8 | 0.032 |
| Deuteranopia (no green cones) | #0060C2 | 0.032 |
| Tritanopia (no blue cones) | #007989 | 0.131 |
| Achromatopsia (no color) | #666666 | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3961C4
#3961C4
oklch(51.9% 0.161 264.8)
- #856200
#856200
oklch(51.8% 0.106 84.1)
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 #3961C4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.040
- Warm Blue #4B57DB ΔE 0.047
- Royal Blue #4169E1 ΔE 0.049
- French Blue #436BAD ΔE 0.050
- Iris #6258C4 ΔE 0.053
- Dark Periwinkle #665FD1 ΔE 0.060
- Windows Blue #3778BF ΔE 0.064
- Azul #1D5DEC ΔE 0.066
Use #3961C4 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.