#434D83
Closest named color: Twilight (#4E518B). oklch(43.8% 0.09 274.2), rgb(67, 77, 131).
Aa
White text reads best on this color (7.99:1).
About this color
#434D83 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.090 and its hue 274°. 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 7.99:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.62:1 |
| White text | 7.99:1 |
Values
| HEX | #434D83 |
| RGB | rgb(67, 77, 131) |
| HSL | hsl(231, 32%, 39%) |
| OKLCH | oklch(43.8% 0.09 274.2) |
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 #434D83 | 7.99:1 | AAA | Lc -92.3 | Preferred for body text |
| Black text on #434D83 | 2.62:1 | Fails | Lc 16.4 | Dividers and decoration only |
| #434D83 text on white | 7.99:1 | AAA | Lc 87.6 | Fine for body text |
| #434D83 text on black | 2.62:1 | Fails | Lc -14.5 | 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
#E6E9F4
oklch(93.5% 0.015 273.8)
-
Step 200
200
#D3D8ED
oklch(88.5% 0.029 275.1)
-
Step 300
300
#B6BFE3
oklch(81% 0.052 274.2)
-
Step 400
400
#909DD5
oklch(70.7% 0.083 274)
-
Step 500
500
#7684CA
oklch(63.1% 0.107 274.3)
-
Step 600
600
#5F6CB7
oklch(55.5% 0.117 274.5)
-
Step 700
700
#4E5A9E
oklch(49% 0.109 274.1)
-
Step 800
800 (this color)
#434D83
oklch(43.8% 0.09 274.2)
-
Step 900
900
#363E67
oklch(37.7% 0.071 274.1)
-
Step 950
950
#20253C
oklch(27.1% 0.043 273.8)
#434D83 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) | #385385 | 0.021 |
| Deuteranopia (no green cones) | #334E82 | 0.021 |
| Tritanopia (no blue cones) | #2B5861 | 0.080 |
| Achromatopsia (no color) | #515151 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #434D83
#434D83
oklch(43.8% 0.09 274.2)
- #625000
#625000
oklch(43.7% 0.09 93.9)
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 #434D83, 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 0.028
- Dusk Blue #26538D ΔE 0.036
- Light Navy Blue #2E5A88 ΔE 0.041
- Denim Blue #3B5B92 ΔE 0.043
- Light Navy #155084 ΔE 0.046
- Dark Slate Blue #483D8B ΔE 0.048
- YInMn Blue #415A77 ΔE 0.048
Use #434D83 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.