#3D7AD7
Closest named color: Windows Blue (#3778BF). oklch(58.6% 0.156 258.7), rgb(61, 122, 215).
Aa
Black text reads best on this color (4.96:1).
About this color
#3D7AD7 is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.156 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.038 away. Black text reads best on it, at 4.96:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.156) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.96:1 |
| White text | 4.23:1 |
Values
| HEX | #3D7AD7 |
| RGB | rgb(61, 122, 215) |
| HSL | hsl(216, 66%, 54%) |
| OKLCH | oklch(58.6% 0.156 258.7) |
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 #3D7AD7 | 4.23:1 | AA large text | Lc -74.4 | Content text, not long reading |
| Black text on #3D7AD7 | 4.96:1 | AA | Lc 35.2 | Non-text elements, placeholder text |
| #3D7AD7 text on white | 4.23:1 | AA large text | Lc 68.9 | Content text, not long reading |
| #3D7AD7 text on black | 4.96:1 | AA | Lc -32.8 | Non-text elements, placeholder text |
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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EBF8
oklch(93.7% 0.02 257.5)
-
Step 200
200
#CADAF4
oklch(88.4% 0.04 260.1)
-
Step 300
300
#A5C2EE
oklch(80.8% 0.07 258.6)
-
Step 400
400
#75A2E6
oklch(70.8% 0.112 258.4)
-
Step 500
500
#5089DF
oklch(63.2% 0.143 258.4)
-
Step 600
600 (this color)
#3D7AD7
oklch(58.6% 0.156 258.7)
-
Step 700
700
#265EB1
oklch(49.1% 0.145 258.5)
-
Step 800
800
#214D8F
oklch(42.7% 0.12 258.6)
-
Step 900
900
#204172
oklch(37.7% 0.093 258.2)
-
Step 950
950
#132643
oklch(26.9% 0.06 258.6)
#3D7AD7 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) | #4C83DB | 0.030 |
| Deuteranopia (no green cones) | #3074D5 | 0.021 |
| Tritanopia (no blue cones) | #00909E | 0.123 |
| Achromatopsia (no color) | #7B7B7B | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D7AD7
#3D7AD7
oklch(58.6% 0.156 258.7)
- #A37200
#A37200
oklch(58.7% 0.122 78.7)
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 #3D7AD7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.038
- Water Blue #0E87CC ΔE 0.046
- Royal Blue #4169E1 ΔE 0.048
- Dark Sky Blue #448EE4 ΔE 0.056
- Cerulean Blue #056EEE ΔE 0.058
- Clear Blue #247AFD ΔE 0.059
- Cool Blue #4984B8 ΔE 0.061
- Steel Blue #4682B4 ΔE 0.063
Use #3D7AD7 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.