#407BE3
Closest named color: Clear Blue (#247AFD). oklch(59.8% 0.17 260.8), rgb(64, 123, 227).
Aa
Black text reads best on this color (5.16:1).
About this color
#407BE3 is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.170 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.042 away. Black text reads best on it, at 5.16:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.170) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.16:1 |
| White text | 4.06:1 |
Values
| HEX | #407BE3 |
| RGB | rgb(64, 123, 227) |
| HSL | hsl(218, 74%, 57%) |
| OKLCH | oklch(59.8% 0.17 260.8) |
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 #407BE3 | 4.06:1 | AA large text | Lc -73.0 | Content text, not long reading |
| Black text on #407BE3 | 5.16:1 | AA | Lc 36.6 | Non-text elements, placeholder text |
| #407BE3 text on white | 4.06:1 | AA large text | Lc 67.5 | Content text, not long reading |
| #407BE3 text on black | 5.16:1 | AA | Lc -34.1 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFA
oklch(93.5% 0.024 262.1)
-
Step 200
200
#C8DAF8
oklch(88.4% 0.046 260.7)
-
Step 300
300
#A2C2F7
oklch(80.9% 0.083 260.4)
-
Step 400
400
#70A0F3
oklch(70.7% 0.133 260.8)
-
Step 500
500 (this color)
#407BE3
oklch(59.8% 0.17 260.8)
-
Step 600
600
#2C6CDD
oklch(55.5% 0.185 260.8)
-
Step 700
700
#1F5AC0
oklch(49.2% 0.172 260.7)
-
Step 800
800
#1C4A9B
oklch(42.7% 0.142 260.8)
-
Step 900
900
#1C3F7B
oklch(37.7% 0.11 260.4)
-
Step 950
950
#112548
oklch(26.9% 0.07 260.7)
#407BE3 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) | #4586E7 | 0.030 |
| Deuteranopia (no green cones) | #2077E1 | 0.026 |
| Tritanopia (no blue cones) | #0093A4 | 0.134 |
| Achromatopsia (no color) | #7E7E7E | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #407BE3
#407BE3
oklch(59.8% 0.17 260.8)
- #A57600
#A57600
oklch(59.8% 0.124 80.7)
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 #407BE3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.042
- Royal Blue #4169E1 ΔE 0.045
- Dark Sky Blue #448EE4 ΔE 0.051
- Cerulean Blue #056EEE ΔE 0.052
- Soft Blue #6488EA ΔE 0.054
- Cornflower #6A79F7 ΔE 0.055
- Windows Blue #3778BF ΔE 0.056
- Water Blue #0E87CC ΔE 0.057
Use #407BE3 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.