#407FCF
Closest named color: Windows Blue (#3778BF). oklch(59.4% 0.139 255.5), rgb(64, 127, 207).
Aa
Black text reads best on this color (5.15:1).
About this color
#407FCF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.139 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.031 away. Black text reads best on it, at 5.15:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 5.15:1 |
| White text | 4.07:1 |
Values
| HEX | #407FCF |
| RGB | rgb(64, 127, 207) |
| HSL | hsl(214, 60%, 53%) |
| OKLCH | oklch(59.4% 0.139 255.5) |
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 #407FCF | 4.07:1 | AA large text | Lc -73.1 | Content text, not long reading |
| Black text on #407FCF | 5.15:1 | AA | Lc 36.4 | Non-text elements, placeholder text |
| #407FCF text on white | 4.07:1 | AA large text | Lc 67.6 | Content text, not long reading |
| #407FCF text on black | 5.15:1 | AA | Lc -34.0 | 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 500.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C9DBF2
oklch(88.5% 0.037 254.6)
-
Step 300
300
#A4C3ED
oklch(80.9% 0.069 256.1)
-
Step 400
400
#72A3E3
oklch(70.7% 0.108 255.5)
-
Step 500
500 (this color)
#407FCF
oklch(59.4% 0.139 255.5)
-
Step 600
600
#2C73C9
oklch(55.6% 0.151 255.4)
-
Step 700
700
#1F60AE
oklch(49.2% 0.14 255.5)
-
Step 800
800
#1C4F8D
oklch(42.8% 0.116 255.4)
-
Step 900
900
#1D4270
oklch(37.7% 0.09 255.2)
-
Step 950
950
#122742
oklch(27.1% 0.057 255.5)
#407FCF 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) | #5A85D2 | 0.033 |
| Deuteranopia (no green cones) | #4578CD | 0.018 |
| Tritanopia (no blue cones) | #00929D | 0.110 |
| Achromatopsia (no color) | #7E7E7E | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #407FCF
#407FCF
oklch(59.4% 0.139 255.5)
- #A97200
#A97200
oklch(59.5% 0.125 75.4)
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 #407FCF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.031
- Water Blue #0E87CC ΔE 0.032
- Cool Blue #4984B8 ΔE 0.042
- Steel Blue #4682B4 ΔE 0.045
- Dark Sky Blue #448EE4 ΔE 0.048
- Nice Blue #107AB0 ΔE 0.059
- Off Blue #5684AE ΔE 0.059
- Soft Blue #6488EA ΔE 0.061
Use #407FCF 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.