#407DC8
Closest named color: Windows Blue (#3778BF). oklch(58.5% 0.132 254.9), rgb(64, 125, 200).
Aa
Black text reads best on this color (4.98:1).
About this color
#407DC8 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.132 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.021 away. Black text reads best on it, at 4.98:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.98:1 |
| White text | 4.21:1 |
Values
| HEX | #407DC8 |
| RGB | rgb(64, 125, 200) |
| HSL | hsl(213, 55%, 52%) |
| OKLCH | oklch(58.5% 0.132 254.9) |
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 #407DC8 | 4.21:1 | AA large text | Lc -74.3 | Content text, not long reading |
| Black text on #407DC8 | 4.98:1 | AA | Lc 35.3 | Non-text elements, placeholder text |
| #407DC8 text on white | 4.21:1 | AA large text | Lc 68.8 | Content text, not long reading |
| #407DC8 text on black | 4.98:1 | AA | Lc -32.9 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF5
oklch(93.6% 0.017 250.8)
-
Step 200
200
#CBDBEF
oklch(88.6% 0.033 254)
-
Step 300
300
#A7C3E7
oklch(80.9% 0.06 254.8)
-
Step 400
400
#78A3DB
oklch(70.6% 0.095 255.3)
-
Step 500
500
#548BD1
oklch(63% 0.121 255.2)
-
Step 600
600 (this color)
#407DC8
oklch(58.5% 0.132 254.9)
-
Step 700
700
#2961A4
oklch(49% 0.123 254.8)
-
Step 800
800
#245085
oklch(42.8% 0.101 254.6)
-
Step 900
900
#22426B
oklch(37.6% 0.08 255.5)
-
Step 950
950
#15273E
oklch(27% 0.049 255.2)
#407DC8 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) | #5B82CB | 0.032 |
| Deuteranopia (no green cones) | #4776C6 | 0.019 |
| Tritanopia (no blue cones) | #008E99 | 0.103 |
| Achromatopsia (no color) | #7B7B7B | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #407DC8
#407DC8
oklch(58.5% 0.132 254.9)
- #A66F00
#A66F00
oklch(58.5% 0.124 74.7)
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 #407DC8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.021
- Water Blue #0E87CC ΔE 0.033
- Cool Blue #4984B8 ΔE 0.036
- Steel Blue #4682B4 ΔE 0.037
- Nice Blue #107AB0 ΔE 0.049
- Flat Blue #3C73A8 ΔE 0.053
- Off Blue #5684AE ΔE 0.053
- Dark Sky Blue #448EE4 ΔE 0.058
Use #407DC8 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.