#3D6EBF
Closest named color: Windows Blue (#3778BF). oklch(54.5% 0.138 259.9), rgb(61, 110, 191).
Aa
White text reads best on this color (5.02:1).
About this color
#3D6EBF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.138 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.027 away. White text reads best on it, at 5.02:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.18:1 |
| White text | 5.02:1 |
Values
| HEX | #3D6EBF |
| RGB | rgb(61, 110, 191) |
| HSL | hsl(217, 52%, 49%) |
| OKLCH | oklch(54.5% 0.138 259.9) |
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 #3D6EBF | 5.02:1 | AA | Lc -79.8 | Fine for body text |
| Black text on #3D6EBF | 4.18:1 | AA large text | Lc 29.6 | Dividers and decoration only |
| #3D6EBF text on white | 5.02:1 | AA | Lc 74.4 | Content text, not long reading |
| #3D6EBF text on black | 4.18:1 | AA large text | Lc -27.3 | 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 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
#AAC2E9
oklch(80.9% 0.061 260.1)
-
Step 400
400
#7CA1DE
oklch(70.6% 0.099 260.1)
-
Step 500
500
#5A89D5
oklch(63.1% 0.126 259.6)
-
Step 600
600 (this color)
#3D6EBF
oklch(54.5% 0.138 259.9)
-
Step 700
700
#325FA8
oklch(49.2% 0.127 259.6)
-
Step 800
800
#2A4E88
oklch(42.8% 0.105 259.5)
-
Step 900
900
#26416D
oklch(37.7% 0.083 259.7)
-
Step 950
950
#172640
oklch(27% 0.053 260.8)
#3D6EBF 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) | #4876C2 | 0.026 |
| Deuteranopia (no green cones) | #3369BD | 0.018 |
| Tritanopia (no blue cones) | #00818D | 0.112 |
| Achromatopsia (no color) | #6F6F6F | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D6EBF
#3D6EBF
oklch(54.5% 0.138 259.9)
- #926700
#926700
oklch(54.4% 0.113 79.9)
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 #3D6EBF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.027
- French Blue #436BAD ΔE 0.028
- Mid Blue #276AB3 ΔE 0.029
- Flat Blue #3C73A8 ΔE 0.042
- Nice Blue #107AB0 ΔE 0.050
- Muted Blue #3B719F ΔE 0.054
- Royal Blue #4169E1 ΔE 0.056
- Dull Blue #49759C ΔE 0.064
Use #3D6EBF 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.