#424B6E
Closest named color: Dusk (#4E5481). oklch(42% 0.06 272.6), rgb(66, 75, 110).
Aa
White text reads best on this color (8.52:1).
About this color
#424B6E is a dark, muted blue. In OKLCH its lightness is 42%, its chroma 0.060 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.043 away. White text reads best on it, at 8.52:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.46:1 |
| White text | 8.52:1 |
Values
| HEX | #424B6E |
| RGB | rgb(66, 75, 110) |
| HSL | hsl(228, 25%, 35%) |
| OKLCH | oklch(42% 0.06 272.6) |
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 #424B6E | 8.52:1 | AAA | Lc -93.8 | Preferred for body text |
| Black text on #424B6E | 2.46:1 | Fails | Lc 14.7 | Not readable |
| #424B6E text on white | 8.52:1 | AAA | Lc 89.3 | Fine for body text |
| #424B6E text on black | 2.46:1 | Fails | Lc -12.9 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7EAF1
oklch(93.7% 0.01 267.4)
-
Step 200
200
#D4D9E6
oklch(88.5% 0.019 269.1)
-
Step 300
300
#B9C0D8
oklch(81% 0.035 272.7)
-
Step 400
400
#949FC4
oklch(70.7% 0.056 272)
-
Step 500
500
#7B87B5
oklch(63.1% 0.071 272.9)
-
Step 600
600
#6470A1
oklch(55.5% 0.078 273.1)
-
Step 700
700
#535E8A
oklch(49.1% 0.072 272.8)
-
Step 800
800 (this color)
#424B6E
oklch(42% 0.06 272.6)
-
Step 900
900
#39405B
oklch(37.7% 0.047 272.8)
-
Step 950
950
#212635
oklch(27.1% 0.029 270.1)
#424B6E 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) | #3F4E6F | 0.009 |
| Deuteranopia (no green cones) | #3C4B6D | 0.009 |
| Tritanopia (no blue cones) | #355257 | 0.054 |
| Achromatopsia (no color) | #4C4C4C | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424B6E
#424B6E
oklch(42% 0.06 272.6)
- #594C24
#594C24
oklch(42% 0.06 91.7)
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 #424B6E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.043
- YInMn Blue #415A77 ΔE 0.044
- Dusty Grape #545775 ΔE 0.048
- Dark Grey Blue #29465B ΔE 0.050
- Twilight #4E518B ΔE 0.053
- Light Navy #155084 ΔE 0.055
- Light Navy Blue #2E5A88 ΔE 0.056
- Dusk Blue #26538D ΔE 0.057
Use #424B6E 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.