#3961C0
Closest named color: Mid Blue (#276AB3). oklch(51.6% 0.156 264.4), rgb(57, 97, 192).
Aa
White text reads best on this color (5.76:1).
About this color
#3961C0 is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.156 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.036 away. White text reads best on it, at 5.76:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.156) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.64:1 |
| White text | 5.76:1 |
Values
| HEX | #3961C0 |
| RGB | rgb(57, 97, 192) |
| HSL | hsl(222, 54%, 49%) |
| OKLCH | oklch(51.6% 0.156 264.4) |
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 #3961C0 | 5.76:1 | AA | Lc -83.7 | Fine for body text |
| Black text on #3961C0 | 3.64:1 | AA large text | Lc 25.6 | Dividers and decoration only |
| #3961C0 text on white | 5.76:1 | AA | Lc 78.5 | Fine for body text |
| #3961C0 text on black | 3.64:1 | AA large text | Lc -23.3 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CBD9F6
oklch(88.4% 0.043 265)
-
Step 300
300
#A8C1F2
oklch(80.9% 0.075 263.7)
-
Step 400
400
#7B9FEC
oklch(70.8% 0.12 264.4)
-
Step 500
500
#5A85E6
oklch(63.2% 0.154 264.4)
-
Step 600
600
#406CD4
oklch(55.6% 0.168 264.4)
-
Step 700
700 (this color)
#3961C0
oklch(51.6% 0.156 264.4)
-
Step 800
800
#2A4A95
oklch(42.8% 0.129 264.3)
-
Step 900
900
#263E76
oklch(37.6% 0.1 264.6)
-
Step 950
950
#162545
oklch(27% 0.063 263.8)
#3961C0 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) | #2B6CC3 | 0.029 |
| Deuteranopia (no green cones) | #0060BE | 0.033 |
| Tritanopia (no blue cones) | #007787 | 0.125 |
| Achromatopsia (no color) | #666666 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3961C0
#3961C0
oklch(51.6% 0.156 264.4)
- #846200
#846200
oklch(51.7% 0.106 84.8)
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 #3961C0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.036
- French Blue #436BAD ΔE 0.046
- Warm Blue #4B57DB ΔE 0.053
- Iris #6258C4 ΔE 0.054
- Royal Blue #4169E1 ΔE 0.055
- Windows Blue #3778BF ΔE 0.063
- Dark Periwinkle #665FD1 ΔE 0.063
- Slate Blue #6A5ACD ΔE 0.068
Use #3961C0 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.