#424F9F
Closest named color: Blueberry (#464196). oklch(46% 0.129 273.3), rgb(66, 79, 159).
Aa
White text reads best on this color (7.36:1).
About this color
#424F9F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.129 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.037 away. White text reads best on it, at 7.36:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.85:1 |
| White text | 7.36:1 |
Values
| HEX | #424F9F |
| RGB | rgb(66, 79, 159) |
| HSL | hsl(232, 41%, 44%) |
| OKLCH | oklch(46% 0.129 273.3) |
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 #424F9F | 7.36:1 | AAA | Lc -90.2 | Preferred for body text |
| Black text on #424F9F | 2.85:1 | Fails | Lc 18.7 | Dividers and decoration only |
| #424F9F text on white | 7.36:1 | AAA | Lc 85.4 | Fine for body text |
| #424F9F text on black | 2.85:1 | Fails | Lc -16.7 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E6E9F6
oklch(93.6% 0.018 275.6)
-
Step 200
200
#D1D8F1
oklch(88.5% 0.035 273.2)
-
Step 300
300
#B3BFEA
oklch(81% 0.062 272.7)
-
Step 400
400
#8C9CDF
oklch(70.6% 0.1 273.3)
-
Step 500
500
#7182D6
oklch(63% 0.128 273.5)
-
Step 600
600
#5A6AC4
oklch(55.6% 0.14 273.4)
-
Step 700
700 (this color)
#424F9F
oklch(46% 0.129 273.3)
-
Step 800
800
#3D4889
oklch(42.6% 0.108 273.7)
-
Step 900
900
#343D6E
oklch(37.7% 0.084 273.8)
-
Step 950
950
#1E2440
oklch(27% 0.053 273.2)
#424F9F 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) | #265AA2 | 0.038 |
| Deuteranopia (no green cones) | #16529D | 0.042 |
| Tritanopia (no blue cones) | #01616F | 0.115 |
| Achromatopsia (no color) | #565656 | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424F9F
#424F9F
oklch(46% 0.129 273.3)
- #6A5600
#6A5600
oklch(46% 0.094 93.2)
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 #424F9F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.037
- Twilight #4E518B ΔE 0.038
- Denim Blue #3B5B92 ΔE 0.043
- Dusk Blue #26538D ΔE 0.046
- Dusky Blue #475F94 ΔE 0.052
- Dark Slate Blue #483D8B ΔE 0.054
- Cobalt #1E488F ΔE 0.054
- Dusk #4E5481 ΔE 0.056
Use #424F9F 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.