#3D6FBE
Closest named color: Windows Blue (#3778BF). oklch(54.6% 0.135 259.2), rgb(61, 111, 190).
Aa
White text reads best on this color (4.98:1).
About this color
#3D6FBE is a medium-dark, moderately saturated blue. In OKLCH its lightness is 55%, its chroma 0.135 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.024 away. White text reads best on it, at 4.98:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.21:1 |
| White text | 4.98:1 |
Values
| HEX | #3D6FBE |
| RGB | rgb(61, 111, 190) |
| HSL | hsl(217, 51%, 49%) |
| OKLCH | oklch(54.6% 0.135 259.2) |
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 #3D6FBE | 4.98:1 | AA | Lc -79.6 | Fine for body text |
| Black text on #3D6FBE | 4.21:1 | AA large text | Lc 29.9 | Dividers and decoration only |
| #3D6FBE text on white | 4.98:1 | AA | Lc 74.2 | Content text, not long reading |
| #3D6FBE text on black | 4.21:1 | AA large text | Lc -27.5 | 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 600.
-
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
#CCDAF0
oklch(88.5% 0.034 259.4)
-
Step 300
300
#AAC2E8
oklch(80.9% 0.06 259.5)
-
Step 400
400
#7CA2DD
oklch(70.8% 0.097 259)
-
Step 500
500
#5A89D4
oklch(63% 0.125 259.4)
-
Step 600
600 (this color)
#3D6FBE
oklch(54.6% 0.135 259.2)
-
Step 700
700
#325FA7
oklch(49.1% 0.126 259.4)
-
Step 800
800
#2A4E87
oklch(42.7% 0.104 259.2)
-
Step 900
900
#26416C
oklch(37.6% 0.081 259.3)
-
Step 950
950
#17263F
oklch(26.9% 0.051 260.2)
#3D6FBE 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) | #4A76C1 | 0.025 |
| Deuteranopia (no green cones) | #366ABC | 0.016 |
| Tritanopia (no blue cones) | #00818D | 0.109 |
| Achromatopsia (no color) | #707070 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D6FBE
#3D6FBE
oklch(54.6% 0.135 259.2)
- #936700
#936700
oklch(54.6% 0.113 79.2)
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 #3D6FBE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.024
- French Blue #436BAD ΔE 0.027
- Mid Blue #276AB3 ΔE 0.030
- Flat Blue #3C73A8 ΔE 0.039
- Nice Blue #107AB0 ΔE 0.047
- Muted Blue #3B719F ΔE 0.051
- Royal Blue #4169E1 ΔE 0.058
- Dull Blue #49759C ΔE 0.061
Use #3D6FBE 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.