#434879
Closest named color: Dusk (#4E5481). oklch(42.1% 0.081 277.9), rgb(67, 72, 121).
Aa
White text reads best on this color (8.60:1).
About this color
#434879 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.081 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.041 away. White text reads best on it, at 8.60:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.44:1 |
| White text | 8.60:1 |
Values
| HEX | #434879 |
| RGB | rgb(67, 72, 121) |
| HSL | hsl(234, 29%, 37%) |
| OKLCH | oklch(42.1% 0.081 277.9) |
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 #434879 | 8.60:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #434879 | 2.44:1 | Fails | Lc 14.5 | Not readable |
| #434879 text on white | 8.60:1 | AAA | Lc 89.5 | Fine for body text |
| #434879 text on black | 2.44:1 | Fails | Lc -12.8 | 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
#E7E9F3
oklch(93.5% 0.014 277.1)
-
Step 200
200
#D4D8EB
oklch(88.5% 0.026 276.4)
-
Step 300
300
#B9BEE0
oklch(80.9% 0.048 278.7)
-
Step 400
400
#959CD0
oklch(70.6% 0.076 278.3)
-
Step 500
500
#7B83C4
oklch(63% 0.098 277.8)
-
Step 600
600
#656CB0
oklch(55.6% 0.105 277.9)
-
Step 700
700
#545A98
oklch(49.1% 0.099 277.9)
-
Step 800
800 (this color)
#434879
oklch(42.1% 0.081 277.9)
-
Step 900
900
#3A3E63
oklch(37.8% 0.063 278.2)
-
Step 950
950
#22243A
oklch(26.9% 0.041 279.3)
#434879 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) | #374E7B | 0.022 |
| Deuteranopia (no green cones) | #334A78 | 0.022 |
| Tritanopia (no blue cones) | #32525A | 0.072 |
| Achromatopsia (no color) | #4C4C4C | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #434879
#434879
oklch(42.1% 0.081 277.9)
- #594D0B
#594D0B
oklch(42% 0.081 98)
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 #434879, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.041
- Twilight #4E518B ΔE 0.041
- Dark Slate Blue #483D8B ΔE 0.046
- Dusk Blue #26538D ΔE 0.049
- Light Navy #155084 ΔE 0.050
- Blueberry #464196 ΔE 0.055
- YInMn Blue #415A77 ΔE 0.055
- Light Navy Blue #2E5A88 ΔE 0.055
Use #434879 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.