#424FA8
Closest named color: Blueberry (#464196). oklch(46.6% 0.142 273.3), rgb(66, 79, 168).
Aa
White text reads best on this color (7.20:1).
About this color
#424FA8 is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.142 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.044 away. White text reads best on it, at 7.20:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.142) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.91:1 |
| White text | 7.20:1 |
Values
| HEX | #424FA8 |
| RGB | rgb(66, 79, 168) |
| HSL | hsl(232, 44%, 46%) |
| OKLCH | oklch(46.6% 0.142 273.3) |
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 #424FA8 | 7.20:1 | AAA | Lc -89.6 | Fine for body text |
| Black text on #424FA8 | 2.91:1 | Fails | Lc 19.3 | Dividers and decoration only |
| #424FA8 text on white | 7.20:1 | AAA | Lc 84.7 | Fine for body text |
| #424FA8 text on black | 2.91:1 | Fails | Lc -17.3 | 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 700.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F8
oklch(93.5% 0.021 274)
-
Step 200
200
#D1D8F3
oklch(88.5% 0.038 274.1)
-
Step 300
300
#B2BEEE
oklch(80.9% 0.069 273.8)
-
Step 400
400
#8A9BE5
oklch(70.6% 0.11 273.4)
-
Step 500
500
#6F81DE
oklch(63.1% 0.141 273.5)
-
Step 600
600
#5868CC
oklch(55.6% 0.154 273.5)
-
Step 700
700 (this color)
#424FA8
oklch(46.6% 0.142 273.3)
-
Step 800
800
#3B478F
oklch(42.7% 0.119 273.2)
-
Step 900
900
#323C72
oklch(37.6% 0.093 273.3)
-
Step 950
950
#1D2443
oklch(27.1% 0.058 272.4)
#424FA8 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) | #1A5CAB | 0.045 |
| Deuteranopia (no green cones) | #0053A6 | 0.049 |
| Tritanopia (no blue cones) | #006474 | 0.123 |
| Achromatopsia (no color) | #575757 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424FA8
#424FA8
oklch(46.6% 0.142 273.3)
- #6C5800
#6C5800
oklch(46.7% 0.096 93.5)
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 #424FA8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.044
- Twilight #4E518B ΔE 0.051
- Denim Blue #3B5B92 ΔE 0.053
- Dusk Blue #26538D ΔE 0.057
- Dusky Blue #475F94 ΔE 0.060
- Dark Slate Blue #483D8B ΔE 0.062
- Cobalt #1E488F ΔE 0.063
- Blue With A Hint Of Purple #533CC6 ΔE 0.067
Use #424FA8 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.