#424F96
Closest named color: Twilight (#4E518B). oklch(45.4% 0.116 273.1), rgb(66, 79, 150).
Aa
White text reads best on this color (7.52:1).
About this color
#424F96 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.116 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.026 away. White text reads best on it, at 7.52:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.79:1 |
| White text | 7.52:1 |
Values
| HEX | #424F96 |
| RGB | rgb(66, 79, 150) |
| HSL | hsl(231, 39%, 42%) |
| OKLCH | oklch(45.4% 0.116 273.1) |
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 #424F96 | 7.52:1 | AAA | Lc -90.8 | Preferred for body text |
| Black text on #424F96 | 2.79:1 | Fails | Lc 18.1 | Dividers and decoration only |
| #424F96 text on white | 7.52:1 | AAA | Lc 86.0 | Fine for body text |
| #424F96 text on black | 2.79:1 | Fails | Lc -16.1 | 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 800.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F7
oklch(93.5% 0.019 273.2)
-
Step 200
200
#D1D8F3
oklch(88.5% 0.038 274.1)
-
Step 300
300
#B2BEED
oklch(80.8% 0.068 273.6)
-
Step 400
400
#8A9CE4
oklch(70.7% 0.108 272.7)
-
Step 500
500
#6F81DD
oklch(63.1% 0.14 273.4)
-
Step 600
600
#5869CA
oklch(55.6% 0.15 273.1)
-
Step 700
700
#4857AF
oklch(49.1% 0.14 272.9)
-
Step 800
800 (this color)
#424F96
oklch(45.4% 0.116 273.1)
-
Step 900
900
#323C71
oklch(37.6% 0.091 273.2)
-
Step 950
950
#1D2442
oklch(27% 0.057 272.2)
#424F96 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) | #2F5899 | 0.030 |
| Deuteranopia (no green cones) | #245194 | 0.033 |
| Tritanopia (no blue cones) | #165F6B | 0.104 |
| Achromatopsia (no color) | #545454 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424F96
#424F96
oklch(45.4% 0.116 273.1)
- #685400
#685400
oklch(45.3% 0.093 92.9)
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 #424F96, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.026
- Denim Blue #3B5B92 ΔE 0.036
- Dusk Blue #26538D ΔE 0.037
- Blueberry #464196 ΔE 0.037
- Dusk #4E5481 ΔE 0.044
- Light Navy Blue #2E5A88 ΔE 0.047
- Dusky Blue #475F94 ΔE 0.048
- Dark Slate Blue #483D8B ΔE 0.048
Use #424F96 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.