#408CC9
Closest named color: Cool Blue (#4984B8). oklch(62% 0.119 245.7), rgb(64, 140, 201).
Aa
Black text reads best on this color (5.81:1).
About this color
#408CC9 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.119 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.030 away. Black text reads best on it, at 5.81:1.
| Hue family | Blues |
| Lightness | medium-dark (62%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.81:1 |
| White text | 3.61:1 |
Values
| HEX | #408CC9 |
| RGB | rgb(64, 140, 201) |
| HSL | hsl(207, 56%, 52%) |
| OKLCH | oklch(62% 0.119 245.7) |
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 #408CC9 | 3.61:1 | AA large text | Lc -68.9 | Content text, not long reading |
| Black text on #408CC9 | 5.81:1 | AA | Lc 40.6 | Non-text elements, placeholder text |
| #408CC9 text on white | 3.61:1 | AA large text | Lc 63.4 | Content text, not long reading |
| #408CC9 text on black | 5.81:1 | AA | Lc -38.2 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C8DCEE
oklch(88.5% 0.033 245.3)
-
Step 300
300
#A2C5E5
oklch(80.9% 0.059 246.2)
-
Step 400
400
#6EA7D7
oklch(70.8% 0.093 245)
-
Step 500
500 (this color)
#408CC9
oklch(62% 0.119 245.7)
-
Step 600
600
#1E79BA
oklch(55.7% 0.129 245.6)
-
Step 700
700
#0D65A0
oklch(49.1% 0.12 245.8)
-
Step 800
800
#115382
oklch(42.8% 0.1 245.6)
-
Step 900
900
#184568
oklch(37.8% 0.077 245.6)
-
Step 950
950
#0F283D
oklch(26.8% 0.05 246.5)
#408CC9 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) | #718ECC | 0.051 |
| Deuteranopia (no green cones) | #5E81C8 | 0.038 |
| Tritanopia (no blue cones) | #009BA2 | 0.088 |
| Achromatopsia (no color) | #878787 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #408CC9
#408CC9
oklch(62% 0.119 245.7)
- #B6762B
#B6762B
oklch(62% 0.119 66.1)
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 #408CC9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.030
- Water Blue #0E87CC ΔE 0.031
- Steel Blue #4682B4 ΔE 0.037
- Faded Blue #658CBB ΔE 0.040
- Dark Sky Blue #448EE4 ΔE 0.041
- Off Blue #5684AE ΔE 0.043
- Dusty Blue #5A86AD ΔE 0.045
- Blue NCS #118AB2 ΔE 0.045
Use #408CC9 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.