#3F62A5
Closest named color: French Blue (#436BAD). oklch(50.3% 0.115 262.2), rgb(63, 98, 165).
Aa
White text reads best on this color (5.99:1).
About this color
#3F62A5 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.115 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.028 away. White text reads best on it, at 5.99:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.50:1 |
| White text | 5.99:1 |
Values
| HEX | #3F62A5 |
| RGB | rgb(63, 98, 165) |
| HSL | hsl(219, 45%, 45%) |
| OKLCH | oklch(50.3% 0.115 262.2) |
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 #3F62A5 | 5.99:1 | AA | Lc -85.0 | Fine for body text |
| Black text on #3F62A5 | 3.50:1 | AA large text | Lc 24.3 | Dividers and decoration only |
| #3F62A5 text on white | 5.99:1 | AA | Lc 79.8 | Fine for body text |
| #3F62A5 text on black | 3.50:1 | AA large text | Lc -22.0 | 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 700.
-
Step 50
50
#F3F6FB
oklch(97.2% 0.007 260.7)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CEDAEE
oklch(88.5% 0.03 260.7)
-
Step 300
300
#ADC1E5
oklch(80.8% 0.056 262.2)
-
Step 400
400
#83A1D8
oklch(70.7% 0.088 262.2)
-
Step 500
500
#6388CE
oklch(63% 0.114 262.4)
-
Step 600
600
#4B71BB
oklch(55.6% 0.123 262.5)
-
Step 700
700 (this color)
#3F62A5
oklch(50.3% 0.115 262.2)
-
Step 800
800
#324D83
oklch(42.7% 0.096 262.9)
-
Step 900
900
#2C4169
oklch(37.8% 0.074 262.4)
-
Step 950
950
#1A263D
oklch(27% 0.046 262.7)
#3F62A5 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) | #4568A8 | 0.019 |
| Deuteranopia (no green cones) | #375FA4 | 0.013 |
| Tritanopia (no blue cones) | #00717B | 0.098 |
| Achromatopsia (no color) | #636363 | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F62A5
#3F62A5
oklch(50.3% 0.115 262.2)
- #815D00
#815D00
oklch(50.3% 0.104 82.2)
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 #3F62A5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.028
- Dusky Blue #475F94 ΔE 0.028
- Mid Blue #276AB3 ΔE 0.032
- Denim Blue #3B5B92 ΔE 0.035
- Denim #3B638C ΔE 0.042
- Muted Blue #3B719F ΔE 0.046
- Flat Blue #3C73A8 ΔE 0.048
- Peacock Blue #016795 ΔE 0.050
Use #3F62A5 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.