#408CB4
Closest named color: Cool Blue (#4984B8). oklch(60.9% 0.096 234.4), rgb(64, 140, 180).
Aa
Black text reads best on this color (5.62:1).
About this color
#408CB4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.096 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.026 away. Black text reads best on it, at 5.62:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.62:1 |
| White text | 3.73:1 |
Values
| HEX | #408CB4 |
| RGB | rgb(64, 140, 180) |
| HSL | hsl(201, 48%, 48%) |
| OKLCH | oklch(60.9% 0.096 234.4) |
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 #408CB4 | 3.73:1 | AA large text | Lc -70.1 | Content text, not long reading |
| Black text on #408CB4 | 5.62:1 | AA | Lc 39.4 | Non-text elements, placeholder text |
| #408CB4 text on white | 3.73:1 | AA large text | Lc 64.6 | Content text, not long reading |
| #408CB4 text on black | 5.62:1 | AA | Lc -37.0 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2ECF2
oklch(93.7% 0.013 233.7)
-
Step 200
200
#C9DCE8
oklch(88.4% 0.026 235.4)
-
Step 300
300
#A4C6DB
oklch(80.9% 0.047 235.3)
-
Step 400
400
#71A9C9
oklch(70.8% 0.075 234.4)
-
Step 500
500 (this color)
#408CB4
oklch(60.9% 0.096 234.4)
-
Step 600
600
#227CA7
oklch(55.5% 0.105 234.6)
-
Step 700
700
#12698F
oklch(49.2% 0.097 233.8)
-
Step 800
800
#145574
oklch(42.5% 0.081 234.6)
-
Step 900
900
#1A475E
oklch(37.8% 0.063 234.2)
-
Step 950
950
#112A37
oklch(27.2% 0.039 233.4)
#408CB4 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) | #798BB6 | 0.061 |
| Deuteranopia (no green cones) | #697FB3 | 0.052 |
| Tritanopia (no blue cones) | #009799 | 0.066 |
| Achromatopsia (no color) | #848484 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #408CB4
#408CB4
oklch(60.9% 0.096 234.4)
- #B07248
#B07248
oklch(60.9% 0.097 54)
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 #408CB4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.026
- Blue NCS #118AB2 ΔE 0.026
- Dusty Blue #5A86AD ΔE 0.027
- Off Blue #5684AE ΔE 0.027
- Steel Blue #4682B4 ΔE 0.029
- Faded Blue #658CBB ΔE 0.039
- Teal Blue #01889F ΔE 0.047
- Water Blue #0E87CC ΔE 0.049
Use #408CB4 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.