#424AB5
Closest named color: Blue With A Hint Of Purple (#533CC6). oklch(46.7% 0.167 274.7), rgb(66, 74, 181).
Aa
White text reads best on this color (7.29:1).
About this color
#424AB5 is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.167 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Blue With A Hint Of Purple (#533CC6), ΔE 0.045 away. White text reads best on it, at 7.29:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Blue With A Hint Of Purple (#533CC6) |
| Black text | 2.87:1 |
| White text | 7.29:1 |
Values
| HEX | #424AB5 |
| RGB | rgb(66, 74, 181) |
| HSL | hsl(236, 47%, 48%) |
| OKLCH | oklch(46.7% 0.167 274.7) |
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 #424AB5 | 7.29:1 | AAA | Lc -89.8 | Fine for body text |
| Black text on #424AB5 | 2.87:1 | Fails | Lc 19.1 | Dividers and decoration only |
| #424AB5 text on white | 7.29:1 | AAA | Lc 84.9 | Fine for body text |
| #424AB5 text on black | 2.87:1 | Fails | Lc -17.1 | 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
#D0D8F8
oklch(88.6% 0.045 274.4)
-
Step 300
300
#B1BDF5
oklch(80.9% 0.08 275.1)
-
Step 400
400
#8999F1
oklch(70.7% 0.13 274.8)
-
Step 500
500
#6E7DEC
oklch(63.1% 0.166 274.8)
-
Step 600
600
#5763DA
oklch(55.5% 0.18 274.6)
-
Step 700
700 (this color)
#424AB5
oklch(46.7% 0.167 274.7)
-
Step 800
800
#3B4399
oklch(42.6% 0.139 274.9)
-
Step 900
900
#323A7A
oklch(37.8% 0.108 274.7)
-
Step 950
950
#1D2247
oklch(26.9% 0.068 275)
#424AB5 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) | #005CB9 | 0.058 |
| Deuteranopia (no green cones) | #0051B3 | 0.050 |
| Tritanopia (no blue cones) | #006478 | 0.140 |
| Achromatopsia (no color) | #565656 | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424AB5
#424AB5
oklch(46.7% 0.167 274.7)
- #6B5800
#6B5800
oklch(46.6% 0.096 94.4)
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 #424AB5, 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 0.045
- Majorelle Blue #3F37C9 ΔE 0.051
- Blue Blue #2242C7 ΔE 0.051
- Blueberry #464196 ΔE 0.053
- Blurple #5539CC ΔE 0.055
- Bluey Purple #6241C7 ΔE 0.058
- Sapphire #2138AB ΔE 0.066
- Iris #6258C4 ΔE 0.066
Use #424AB5 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.