#424AA3
Closest named color: Blueberry (#464196). oklch(45.3% 0.142 275.3), rgb(66, 74, 163).
Aa
White text reads best on this color (7.66:1).
About this color
#424AA3 is a medium-dark, vivid blue. In OKLCH its lightness is 45%, its chroma 0.142 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.030 away. White text reads best on it, at 7.66:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | vivid (0.142) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.74:1 |
| White text | 7.66:1 |
Values
| HEX | #424AA3 |
| RGB | rgb(66, 74, 163) |
| HSL | hsl(235, 42%, 45%) |
| OKLCH | oklch(45.3% 0.142 275.3) |
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 #424AA3 | 7.66:1 | AAA | Lc -91.1 | Preferred for body text |
| Black text on #424AA3 | 2.74:1 | Fails | Lc 17.7 | Dividers and decoration only |
| #424AA3 text on white | 7.66:1 | AAA | Lc 86.3 | Fine for body text |
| #424AA3 text on black | 2.74:1 | Fails | Lc -15.7 | 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
#E5E9FA
oklch(93.6% 0.023 275.4)
-
Step 200
200
#D0D7F8
oklch(88.4% 0.046 276)
-
Step 300
300
#B1BDF7
oklch(81% 0.083 275.3)
-
Step 400
400
#8998F3
oklch(70.6% 0.134 275.3)
-
Step 500
500
#6E7CEE
oklch(63.1% 0.17 275.2)
-
Step 600
600
#5962DC
oklch(55.6% 0.184 275.5)
-
Step 700
700
#4950BF
oklch(49% 0.171 275.4)
-
Step 800
800 (this color)
#424AA3
oklch(45.3% 0.142 275.3)
-
Step 900
900
#32397B
oklch(37.6% 0.111 275.2)
-
Step 950
950
#1D2248
oklch(27% 0.07 275)
#424AA3 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) | #1057A6 | 0.050 |
| Deuteranopia (no green cones) | #004FA1 | 0.052 |
| Tritanopia (no blue cones) | #005F6F | 0.125 |
| Achromatopsia (no color) | #535353 | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424AA3
#424AA3
oklch(45.3% 0.142 275.3)
- #665500
#665500
oklch(45.3% 0.093 95.6)
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 #424AA3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.030
- Dark Slate Blue #483D8B ΔE 0.049
- Twilight #4E518B ΔE 0.050
- Cobalt #1E488F ΔE 0.054
- Dusk Blue #26538D ΔE 0.055
- Denim Blue #3B5B92 ΔE 0.058
- Sapphire #2138AB ΔE 0.066
- Blue With A Hint Of Purple #533CC6 ΔE 0.067
Use #424AA3 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.