#424CA6
Closest named color: Blueberry (#464196). oklch(45.9% 0.144 274.5), rgb(66, 76, 166).
Aa
White text reads best on this color (7.45:1).
About this color
#424CA6 is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.144 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.036 away. White text reads best on it, at 7.45:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.144) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.81:1 |
| White text | 7.45:1 |
Values
| HEX | #424CA6 |
| RGB | rgb(66, 76, 166) |
| HSL | hsl(234, 43%, 45%) |
| OKLCH | oklch(45.9% 0.144 274.5) |
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 #424CA6 | 7.45:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #424CA6 | 2.81:1 | Fails | Lc 18.4 | Dividers and decoration only |
| #424CA6 text on white | 7.45:1 | AAA | Lc 85.6 | Fine for body text |
| #424CA6 text on black | 2.81:1 | Fails | Lc -16.4 | Dividers and decoration only |
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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FB
oklch(93.6% 0.025 275.9)
-
Step 200
200
#CFD8F9
oklch(88.6% 0.047 273.4)
-
Step 300
300
#B0BDF7
oklch(80.9% 0.083 274.6)
-
Step 400
400
#8899F4
oklch(70.8% 0.134 274.4)
-
Step 500
500
#6C7CEF
oklch(63% 0.172 274.4)
-
Step 600
600
#5662DE
oklch(55.6% 0.187 274.4)
-
Step 700
700
#4750C1
oklch(49.1% 0.174 274.5)
-
Step 800
800 (this color)
#424CA6
oklch(45.9% 0.144 274.5)
-
Step 900
900
#31397C
oklch(37.6% 0.113 274.5)
-
Step 950
950
#1D2248
oklch(27% 0.07 275)
#424CA6 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) | #1259A9 | 0.049 |
| Deuteranopia (no green cones) | #0051A4 | 0.050 |
| Tritanopia (no blue cones) | #006171 | 0.125 |
| Achromatopsia (no color) | #555555 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424CA6
#424CA6
oklch(45.9% 0.144 274.5)
- #695600
#695600
oklch(45.9% 0.094 94)
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 #424CA6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.036
- Twilight #4E518B ΔE 0.051
- Dark Slate Blue #483D8B ΔE 0.055
- Denim Blue #3B5B92 ΔE 0.056
- Dusk Blue #26538D ΔE 0.057
- Cobalt #1E488F ΔE 0.058
- Dusky Blue #475F94 ΔE 0.065
- Blue With A Hint Of Purple #533CC6 ΔE 0.065
Use #424CA6 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.