#424AD2
Closest named color: Warm Blue (#4B57DB). oklch(49.1% 0.205 273.4), rgb(66, 74, 210).
Aa
White text reads best on this color (6.68:1).
About this color
#424AD2 is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.205 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.036 away. White text reads best on it, at 6.68:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.205) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.14:1 |
| White text | 6.68:1 |
Values
| HEX | #424AD2 |
| RGB | rgb(66, 74, 210) |
| HSL | hsl(237, 62%, 54%) |
| OKLCH | oklch(49.1% 0.205 273.4) |
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 #424AD2 | 6.68:1 | AA | Lc -87.4 | Fine for body text |
| Black text on #424AD2 | 3.14:1 | AA large text | Lc 21.7 | Dividers and decoration only |
| #424AD2 text on white | 6.68:1 | AA | Lc 82.3 | Fine for body text |
| #424AD2 text on black | 3.14:1 | AA large text | Lc -19.6 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E3E9FE
oklch(93.6% 0.029 273.1)
-
Step 200
200
#CDD7FF
oklch(88.4% 0.056 274.2)
-
Step 300
300
#ACBDFF
oklch(80.9% 0.095 273)
-
Step 400
400
#8397FF
oklch(70.7% 0.153 273.6)
-
Step 500
500
#6679FF
oklch(63.1% 0.198 273.3)
-
Step 600
600
#505CF1
oklch(55.6% 0.22 273.3)
-
Step 700
700 (this color)
#424AD2
oklch(49.1% 0.205 273.4)
-
Step 800
800
#363EAA
oklch(42.8% 0.17 273.5)
-
Step 900
900
#2E3686
oklch(37.6% 0.133 273.8)
-
Step 950
950
#1A214F
oklch(27.1% 0.084 273)
#424AD2 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) | #0063D6 | 0.063 |
| Deuteranopia (no green cones) | #0055CF | 0.047 |
| Tritanopia (no blue cones) | #006E87 | 0.167 |
| Achromatopsia (no color) | #5C5C5C | 0.206 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424AD2
#424AD2
oklch(49.1% 0.205 273.4)
- #745F00
#745F00
oklch(49.2% 0.101 93.8)
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 #424AD2, closest first.
No curated palette has a color within ΔE 0.04 of #424AD2.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.036
- Blue With A Hint Of Purple #533CC6 ΔE 0.040
- Blurple #5539CC ΔE 0.041
- Majorelle Blue #3F37C9 ΔE 0.042
- Blue Blue #2242C7 ΔE 0.046
- Bluey Purple #6241C7 ΔE 0.053
- Purpley Blue #5F34E7 ΔE 0.060
- Azul #1D5DEC ΔE 0.061
Use #424AD2 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.