#424C69
Closest named color: YInMn Blue (#415A77). oklch(42% 0.05 269.5), rgb(66, 76, 105).
Aa
White text reads best on this color (8.50:1).
About this color
#424C69 is a dark, muted blue. In OKLCH its lightness is 42%, its chroma 0.050 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.043 away. White text reads best on it, at 8.50:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.46:1 |
| White text | 8.50:1 |
Values
| HEX | #424C69 |
| RGB | rgb(66, 76, 105) |
| HSL | hsl(225, 23%, 34%) |
| OKLCH | oklch(42% 0.05 269.5) |
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 #424C69 | 8.50:1 | AAA | Lc -93.8 | Preferred for body text |
| Black text on #424C69 | 2.46:1 | Fails | Lc 14.7 | Not readable |
| #424C69 text on white | 8.50:1 | AAA | Lc 89.2 | Fine for body text |
| #424C69 text on black | 2.46:1 | Fails | Lc -13.0 | Not readable |
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 800.
-
Step 50
50
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAF0
oklch(93.6% 0.009 264.5)
-
Step 200
200
#D5D9E4
oklch(88.5% 0.016 270)
-
Step 300
300
#B9C0D4
oklch(80.9% 0.029 270.3)
-
Step 400
400
#95A0BF
oklch(70.8% 0.047 269.8)
-
Step 500
500
#7B88AF
oklch(63.1% 0.061 270.3)
-
Step 600
600
#64729A
oklch(55.6% 0.065 269.3)
-
Step 700
700
#535F84
oklch(49.1% 0.061 270.2)
-
Step 800
800 (this color)
#424C69
oklch(42% 0.05 269.5)
-
Step 900
900
#394157
oklch(37.7% 0.039 269)
-
Step 950
950
#212633
oklch(27% 0.025 268.3)
#424C69 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) | #434E6A | 0.006 |
| Deuteranopia (no green cones) | #3F4B68 | 0.006 |
| Tritanopia (no blue cones) | #375256 | 0.045 |
| Achromatopsia (no color) | #4D4D4D | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424C69
#424C69
oklch(42% 0.05 269.5)
- #584C2C
#584C2C
oklch(42% 0.05 89.6)
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 #424C69, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.043
- Dark Grey Blue #29465B ΔE 0.046
- Dusty Grape #545775 ΔE 0.047
- Dusk #4E5481 ΔE 0.047
- Dark Slate Gray #2F4F4F ΔE 0.056
- Charcoal #264653 ΔE 0.057
- Light Navy Blue #2E5A88 ΔE 0.059
- Light Navy #155084 ΔE 0.060
Use #424C69 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.