#424ACB
Closest named color: Blue With A Hint Of Purple (#533CC6). oklch(48.5% 0.196 273.7), rgb(66, 74, 203).
Aa
White text reads best on this color (6.83:1).
About this color
#424ACB is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.196 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 0.036 away. White text reads best on it, at 6.83:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.196) |
| Temperature | cool |
| Nearest name | Blue With A Hint Of Purple (#533CC6) |
| Black text | 3.07:1 |
| White text | 6.83:1 |
Values
| HEX | #424ACB |
| RGB | rgb(66, 74, 203) |
| HSL | hsl(236, 57%, 53%) |
| OKLCH | oklch(48.5% 0.196 273.7) |
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 #424ACB | 6.83:1 | AA | Lc -88.0 | Fine for body text |
| Black text on #424ACB | 3.07:1 | AA large text | Lc 21.0 | Dividers and decoration only |
| #424ACB text on white | 6.83:1 | AA | Lc 83.0 | Fine for body text |
| #424ACB text on black | 3.07:1 | AA large text | Lc -18.9 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E4E9FD
oklch(93.6% 0.028 274.7)
-
Step 200
200
#CED7FD
oklch(88.4% 0.053 274.8)
-
Step 300
300
#ADBDFE
oklch(81% 0.094 273.5)
-
Step 400
400
#8397FE
oklch(70.6% 0.152 273.6)
-
Step 500
500
#6879FC
oklch(63.1% 0.194 273.9)
-
Step 600
600
#525EEC
oklch(55.7% 0.211 273.6)
-
Step 700
700 (this color)
#424ACB
oklch(48.5% 0.196 273.7)
-
Step 800
800
#373FA6
oklch(42.7% 0.163 273.8)
-
Step 900
900
#2F3783
oklch(37.6% 0.127 274.1)
-
Step 950
950
#1B214D
oklch(27% 0.081 273.9)
#424ACB 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) | #0061CF | 0.061 |
| Deuteranopia (no green cones) | #0054C9 | 0.047 |
| Tritanopia (no blue cones) | #006B84 | 0.158 |
| Achromatopsia (no color) | #5B5B5B | 0.197 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424ACB
#424ACB
oklch(48.5% 0.196 273.7)
- #725D00
#725D00
oklch(48.5% 0.099 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 #424ACB, 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 0.036
- Majorelle Blue #3F37C9 ΔE 0.039
- Blurple #5539CC ΔE 0.040
- Warm Blue #4B57DB ΔE 0.042
- Blue Blue #2242C7 ΔE 0.043
- Bluey Purple #6241C7 ΔE 0.050
- Iris #6258C4 ΔE 0.062
- Purpley Blue #5F34E7 ΔE 0.067
Use #424ACB 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.