#424A68
Closest named color: Dark Grey Blue (#29465B). oklch(41.5% 0.051 272.5), rgb(66, 74, 104).
Aa
White text reads best on this color (8.70:1).
About this color
#424A68 is a dark, muted blue. In OKLCH its lightness is 41%, its chroma 0.051 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.044 away. White text reads best on it, at 8.70:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.41:1 |
| White text | 8.70:1 |
Values
| HEX | #424A68 |
| RGB | rgb(66, 74, 104) |
| HSL | hsl(227, 22%, 33%) |
| OKLCH | oklch(41.5% 0.051 272.5) |
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 #424A68 | 8.70:1 | AAA | Lc -94.3 | Preferred for body text |
| Black text on #424A68 | 2.41:1 | Fails | Lc 14.1 | Not readable |
| #424A68 text on white | 8.70:1 | AAA | Lc 89.8 | Fine for body text |
| #424A68 text on black | 2.41:1 | Fails | Lc -12.4 | 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
#E8EAF0
oklch(93.7% 0.008 271.3)
-
Step 200
200
#D5D9E5
oklch(88.6% 0.017 271.2)
-
Step 300
300
#BAC0D5
oklch(81% 0.03 273)
-
Step 400
400
#969FBF
oklch(70.6% 0.048 272.8)
-
Step 500
500
#7C88AF
oklch(63.2% 0.061 271.3)
-
Step 600
600
#66719B
oklch(55.6% 0.067 272.8)
-
Step 700
700
#555F84
oklch(49.2% 0.061 272.4)
-
Step 800
800 (this color)
#424A68
oklch(41.5% 0.051 272.5)
-
Step 900
900
#3A4057
oklch(37.6% 0.04 273)
-
Step 950
950
#222633
oklch(27.1% 0.025 271.4)
#424A68 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) | #404D69 | 0.009 |
| Deuteranopia (no green cones) | #3D4A67 | 0.008 |
| Tritanopia (no blue cones) | #375054 | 0.047 |
| Achromatopsia (no color) | #4B4B4B | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424A68
#424A68
oklch(41.5% 0.051 272.5)
- #554B2A
#554B2A
oklch(41.4% 0.051 93.1)
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 #424A68, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.044
- YInMn Blue #415A77 ΔE 0.049
- Dusk #4E5481 ΔE 0.051
- Dusty Grape #545775 ΔE 0.052
- Charcoal #264653 ΔE 0.055
- Dark Slate Gray #2F4F4F ΔE 0.058
- Light Navy #155084 ΔE 0.061
- Twilight #4E518B ΔE 0.062
Use #424A68 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.