#424F82
Closest named color: Twilight (#4E518B). oklch(44.1% 0.086 271.7), rgb(66, 79, 130).
Aa
White text reads best on this color (7.85:1).
About this color
#424F82 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.086 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.024 away. White text reads best on it, at 7.85:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.67:1 |
| White text | 7.85:1 |
Values
| HEX | #424F82 |
| RGB | rgb(66, 79, 130) |
| HSL | hsl(228, 33%, 38%) |
| OKLCH | oklch(44.1% 0.086 271.7) |
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 #424F82 | 7.85:1 | AAA | Lc -91.9 | Preferred for body text |
| Black text on #424F82 | 2.67:1 | Fails | Lc 16.8 | Dividers and decoration only |
| #424F82 text on white | 7.85:1 | AAA | Lc 87.2 | Fine for body text |
| #424F82 text on black | 2.67:1 | Fails | Lc -14.9 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6EAF4
oklch(93.7% 0.014 268.5)
-
Step 200
200
#D2D9EC
oklch(88.6% 0.027 269.6)
-
Step 300
300
#B5BFE2
oklch(80.8% 0.051 272.7)
-
Step 400
400
#8F9ED3
oklch(70.7% 0.08 272)
-
Step 500
500
#7385C8
oklch(63% 0.103 271.7)
-
Step 600
600
#5C6EB4
oklch(55.6% 0.111 271.5)
-
Step 700
700
#4C5C9B
oklch(49.2% 0.103 271.4)
-
Step 800
800 (this color)
#424F82
oklch(44.1% 0.086 271.7)
-
Step 900
900
#353F65
oklch(37.7% 0.067 271.7)
-
Step 950
950
#1F253B
oklch(27% 0.042 271.7)
#424F82 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) | #3C5584 | 0.018 |
| Deuteranopia (no green cones) | #364F81 | 0.016 |
| Tritanopia (no blue cones) | #295A62 | 0.077 |
| Achromatopsia (no color) | #525252 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424F82
#424F82
oklch(44.1% 0.086 271.7)
- #64510A
#64510A
oklch(44.2% 0.086 92.2)
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 #424F82, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.024
- Dusk #4E5481 ΔE 0.024
- Dusk Blue #26538D ΔE 0.034
- Light Navy Blue #2E5A88 ΔE 0.036
- Denim Blue #3B5B92 ΔE 0.039
- YInMn Blue #415A77 ΔE 0.042
- Light Navy #155084 ΔE 0.045
- Dusty Grape #545775 ΔE 0.046
Use #424F82 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.