#408DD3
Closest named color: Dark Sky Blue (#448EE4). oklch(62.7% 0.13 248.8), rgb(64, 141, 211).
Aa
Black text reads best on this color (5.96:1).
About this color
#408DD3 is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.130 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.026 away. Black text reads best on it, at 5.96:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.96:1 |
| White text | 3.51:1 |
Values
| HEX | #408DD3 |
| RGB | rgb(64, 141, 211) |
| HSL | hsl(209, 63%, 54%) |
| OKLCH | oklch(62.7% 0.13 248.8) |
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 #408DD3 | 3.51:1 | AA large text | Lc -67.9 | Content text, not long reading |
| Black text on #408DD3 | 5.96:1 | AA | Lc 41.6 | Non-text elements, placeholder text |
| #408DD3 text on white | 3.51:1 | AA large text | Lc 62.5 | Content text, not long reading |
| #408DD3 text on black | 5.96:1 | AA | Lc -39.2 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C8DCF0
oklch(88.6% 0.035 248.2)
-
Step 300
300
#A1C5E9
oklch(81% 0.064 248.6)
-
Step 400
400
#6CA6DD
oklch(70.7% 0.101 248.2)
-
Step 500
500 (this color)
#408DD3
oklch(62.7% 0.13 248.8)
-
Step 600
600
#1A77C2
oklch(55.7% 0.142 248.9)
-
Step 700
700
#0764A7
oklch(49.2% 0.131 248.5)
-
Step 800
800
#0E5287
oklch(42.8% 0.108 248.3)
-
Step 900
900
#16446C
oklch(37.7% 0.085 248.5)
-
Step 950
950
#0F283F
oklch(27% 0.053 248.7)
#408DD3 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) | #6E90D6 | 0.047 |
| Deuteranopia (no green cones) | #5982D2 | 0.034 |
| Tritanopia (no blue cones) | #009EA6 | 0.099 |
| Achromatopsia (no color) | #898989 | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #408DD3
#408DD3
oklch(62.7% 0.13 248.8)
- #BA7717
#BA7717
oklch(62.6% 0.13 68.7)
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 #408DD3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.026
- Water Blue #0E87CC ΔE 0.034
- Cool Blue #4984B8 ΔE 0.043
- Chefchaouen Blue #4895EF ΔE 0.046
- Faded Blue #658CBB ΔE 0.048
- Steel Blue #4682B4 ΔE 0.050
- Soft Blue #6488EA ΔE 0.053
- Off Blue #5684AE ΔE 0.057
Use #408DD3 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.