#434D84
Closest named color: Twilight (#4E518B). oklch(43.8% 0.091 274.2), rgb(67, 77, 132).
Aa
White text reads best on this color (7.97:1).
About this color
#434D84 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.091 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.023 away. White text reads best on it, at 7.97:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.63:1 |
| White text | 7.97:1 |
Values
| HEX | #434D84 |
| RGB | rgb(67, 77, 132) |
| HSL | hsl(231, 33%, 39%) |
| OKLCH | oklch(43.8% 0.091 274.2) |
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 #434D84 | 7.97:1 | AAA | Lc -92.2 | Preferred for body text |
| Black text on #434D84 | 2.63:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #434D84 text on white | 7.97:1 | AAA | Lc 87.5 | Fine for body text |
| #434D84 text on black | 2.63:1 | Fails | Lc -14.6 | 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
#E6E9F5
oklch(93.5% 0.016 274.8)
-
Step 200
200
#D3D8ED
oklch(88.5% 0.029 275.1)
-
Step 300
300
#B6BFE4
oklch(81% 0.053 274.4)
-
Step 400
400
#909DD6
oklch(70.7% 0.085 274.1)
-
Step 500
500
#7584CB
oklch(63.1% 0.108 273.8)
-
Step 600
600
#5F6CB8
oklch(55.6% 0.119 274.6)
-
Step 700
700
#4E5A9F
oklch(49.1% 0.111 274.2)
-
Step 800
800 (this color)
#434D84
oklch(43.8% 0.091 274.2)
-
Step 900
900
#363E67
oklch(37.7% 0.071 274.1)
-
Step 950
950
#20253C
oklch(27.1% 0.043 273.8)
#434D84 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) | #385486 | 0.023 |
| Deuteranopia (no green cones) | #324E83 | 0.022 |
| Tritanopia (no blue cones) | #2A5862 | 0.080 |
| Achromatopsia (no color) | #515151 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #434D84
#434D84
oklch(43.8% 0.091 274.2)
- #625100
#625100
oklch(43.9% 0.09 95)
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 #434D84, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.023
- Dusk #4E5481 ΔE 0.029
- Dusk Blue #26538D ΔE 0.036
- Light Navy Blue #2E5A88 ΔE 0.041
- Denim Blue #3B5B92 ΔE 0.042
- Light Navy #155084 ΔE 0.046
- Dark Slate Blue #483D8B ΔE 0.047
- Blueberry #464196 ΔE 0.047
Use #434D84 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.