#3F67B4
Closest named color: French Blue (#436BAD). oklch(52.3% 0.13 262.2), rgb(63, 103, 180).
Aa
White text reads best on this color (5.51:1).
About this color
#3F67B4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.130 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.018 away. White text reads best on it, at 5.51:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.81:1 |
| White text | 5.51:1 |
Values
| HEX | #3F67B4 |
| RGB | rgb(63, 103, 180) |
| HSL | hsl(219, 48%, 48%) |
| OKLCH | oklch(52.3% 0.13 262.2) |
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 #3F67B4 | 5.51:1 | AA | Lc -82.6 | Fine for body text |
| Black text on #3F67B4 | 3.81:1 | AA large text | Lc 26.8 | Dividers and decoration only |
| #3F67B4 text on white | 5.51:1 | AA | Lc 77.3 | Fine for body text |
| #3F67B4 text on black | 3.81:1 | AA large text | Lc -24.5 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CDDAF1
oklch(88.6% 0.035 262)
-
Step 300
300
#ABC1EA
oklch(80.8% 0.063 262.8)
-
Step 400
400
#7EA1E0
oklch(70.8% 0.101 261.8)
-
Step 500
500
#5E88D7
oklch(63.2% 0.128 262.1)
-
Step 600
600
#4470C4
oklch(55.6% 0.14 262)
-
Step 700
700 (this color)
#3F67B4
oklch(52.3% 0.13 262.2)
-
Step 800
800
#2D4D89
oklch(42.8% 0.107 261.8)
-
Step 900
900
#28406E
oklch(37.6% 0.085 262.3)
-
Step 950
950
#182640
oklch(27% 0.052 262)
#3F67B4 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) | #436FB7 | 0.023 |
| Deuteranopia (no green cones) | #3164B2 | 0.017 |
| Tritanopia (no blue cones) | #007985 | 0.108 |
| Achromatopsia (no color) | #696969 | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F67B4
#3F67B4
oklch(52.3% 0.13 262.2)
- #886300
#886300
oklch(52.4% 0.108 82.9)
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 #3F67B4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.018
- Mid Blue #276AB3 ΔE 0.021
- Flat Blue #3C73A8 ΔE 0.042
- Windows Blue #3778BF ΔE 0.047
- Muted Blue #3B719F ΔE 0.049
- Dusky Blue #475F94 ΔE 0.052
- Nice Blue #107AB0 ΔE 0.058
- Denim Blue #3B5B92 ΔE 0.060
Use #3F67B4 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.