#3D68B3
Closest named color: French Blue (#436BAD). oklch(52.4% 0.128 260.7), rgb(61, 104, 179).
Aa
White text reads best on this color (5.48:1).
About this color
#3D68B3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.128 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.015 away. White text reads best on it, at 5.48:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.128) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.82:1 |
| White text | 5.48:1 |
Values
| HEX | #3D68B3 |
| RGB | rgb(61, 104, 179) |
| HSL | hsl(218, 49%, 47%) |
| OKLCH | oklch(52.4% 0.128 260.7) |
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 #3D68B3 | 5.48:1 | AA | Lc -82.4 | Fine for body text |
| Black text on #3D68B3 | 3.82:1 | AA large text | Lc 26.9 | Dividers and decoration only |
| #3D68B3 text on white | 5.48:1 | AA | Lc 77.1 | Fine for body text |
| #3D68B3 text on black | 3.82:1 | AA large text | Lc -24.6 | 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 600.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CDDAEF
oklch(88.5% 0.032 260)
-
Step 300
300
#ACC2E7
oklch(81% 0.058 260.8)
-
Step 400
400
#80A1DA
oklch(70.6% 0.092 261.1)
-
Step 500
500
#5F89D0
oklch(63.1% 0.117 260.4)
-
Step 600
600 (this color)
#3D68B3
oklch(52.4% 0.128 260.7)
-
Step 700
700
#375FA3
oklch(49.1% 0.118 260.3)
-
Step 800
800
#2E4E84
oklch(42.7% 0.098 260.3)
-
Step 900
900
#29416A
oklch(37.7% 0.077 260.5)
-
Step 950
950
#18263E
oklch(26.9% 0.049 260.7)
#3D68B3 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) | #466FB6 | 0.023 |
| Deuteranopia (no green cones) | #3364B1 | 0.016 |
| Tritanopia (no blue cones) | #007985 | 0.104 |
| Achromatopsia (no color) | #696969 | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D68B3
#3D68B3
oklch(52.4% 0.128 260.7)
- #8A6200
#8A6200
oklch(52.4% 0.108 80.6)
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 #3D68B3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.015
- Mid Blue #276AB3 ΔE 0.018
- Flat Blue #3C73A8 ΔE 0.039
- Windows Blue #3778BF ΔE 0.045
- Muted Blue #3B719F ΔE 0.045
- Dusky Blue #475F94 ΔE 0.051
- Nice Blue #107AB0 ΔE 0.055
- Ocean Blue #03719C ΔE 0.058
Use #3D68B3 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.