#424397
Closest named color: Blueberry (#464196). oklch(43% 0.134 278.6), rgb(66, 67, 151).
Aa
White text reads best on this color (8.46:1).
About this color
#424397 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.134 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.007 away. White text reads best on it, at 8.46:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.48:1 |
| White text | 8.46:1 |
Values
| HEX | #424397 |
| RGB | rgb(66, 67, 151) |
| HSL | hsl(239, 39%, 43%) |
| OKLCH | oklch(43% 0.134 278.6) |
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 #424397 | 8.46:1 | AAA | Lc -93.4 | Preferred for body text |
| Black text on #424397 | 2.48:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #424397 text on white | 8.46:1 | AAA | Lc 88.9 | Fine for body text |
| #424397 text on black | 2.48:1 | Fails | Lc -13.3 | Not readable |
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 800.
-
Step 50
50
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E6E9F9
oklch(93.6% 0.022 277.5)
-
Step 200
200
#D2D7F6
oklch(88.5% 0.043 278.2)
-
Step 300
300
#B5BCF3
oklch(80.9% 0.078 278.9)
-
Step 400
400
#9098EE
oklch(70.8% 0.125 278.6)
-
Step 500
500
#767BE8
oklch(63.1% 0.161 278.7)
-
Step 600
600
#6062D6
oklch(55.6% 0.174 278.4)
-
Step 700
700
#5050BA
oklch(49.1% 0.163 278.6)
-
Step 800
800 (this color)
#424397
oklch(43% 0.134 278.6)
-
Step 900
900
#373978
oklch(37.8% 0.105 278.7)
-
Step 950
950
#202246
oklch(27.1% 0.066 278.6)
#424397 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) | #0D509A | 0.055 |
| Deuteranopia (no green cones) | #004A95 | 0.057 |
| Tritanopia (no blue cones) | #175666 | 0.117 |
| Achromatopsia (no color) | #4D4D4D | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424397
#424397
oklch(43% 0.134 278.6)
- #5C5000
#5C5000
oklch(43% 0.089 99.3)
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 #424397, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.007
- Dark Slate Blue #483D8B ΔE 0.025
- Cobalt #1E488F ΔE 0.045
- Twilight #4E518B ΔE 0.051
- Dusk Blue #26538D ΔE 0.056
- Sapphire #2138AB ΔE 0.062
- Light Navy #155084 ΔE 0.067
- Denim Blue #3B5B92 ΔE 0.067
Use #424397 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.