#424DB8
Closest named color: Blue With A Hint Of Purple (#533CC6). oklch(47.5% 0.167 273.7), rgb(66, 77, 184).
Aa
White text reads best on this color (7.03:1).
About this color
#424DB8 is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.167 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Blue With A Hint Of Purple (#533CC6), ΔE 0.046 away. White text reads best on it, at 7.03:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Blue With A Hint Of Purple (#533CC6) |
| Black text | 2.98:1 |
| White text | 7.03:1 |
Values
| HEX | #424DB8 |
| RGB | rgb(66, 77, 184) |
| HSL | hsl(234, 47%, 49%) |
| OKLCH | oklch(47.5% 0.167 273.7) |
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 #424DB8 | 7.03:1 | AAA | Lc -88.9 | Fine for body text |
| Black text on #424DB8 | 2.98:1 | Fails | Lc 20.1 | Dividers and decoration only |
| #424DB8 text on white | 7.03:1 | AAA | Lc 84.0 | Fine for body text |
| #424DB8 text on black | 2.98:1 | Fails | Lc -18.0 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FA
oklch(93.6% 0.023 275.4)
-
Step 200
200
#CFD8F8
oklch(88.5% 0.045 273)
-
Step 300
300
#B0BDF6
oklch(80.8% 0.082 274.5)
-
Step 400
400
#879AF1
oklch(70.8% 0.129 273.3)
-
Step 500
500
#6C7EEC
oklch(63.2% 0.165 273.8)
-
Step 600
600
#5564DA
oklch(55.6% 0.179 273.6)
-
Step 700
700 (this color)
#424DB8
oklch(47.5% 0.167 273.7)
-
Step 800
800
#394499
oklch(42.7% 0.138 273.5)
-
Step 900
900
#313A7A
oklch(37.7% 0.108 274)
-
Step 950
950
#1C2347
oklch(27.1% 0.067 272.9)
#424DB8 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) | #005EBC | 0.055 |
| Deuteranopia (no green cones) | #0054B6 | 0.048 |
| Tritanopia (no blue cones) | #00677B | 0.140 |
| Achromatopsia (no color) | #595959 | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424DB8
#424DB8
oklch(47.5% 0.167 273.7)
- #6E5A00
#6E5A00
oklch(47.4% 0.097 93.9)
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 #424DB8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue With A Hint Of Purple #533CC6 ΔE 0.046
- Blue Blue #2242C7 ΔE 0.052
- Majorelle Blue #3F37C9 ΔE 0.054
- Blurple #5539CC ΔE 0.056
- Bluey Purple #6241C7 ΔE 0.057
- Iris #6258C4 ΔE 0.060
- Blueberry #464196 ΔE 0.060
- Warm Blue #4B57DB ΔE 0.061
Use #424DB8 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.