#434B9B
Closest named color: Blueberry (#464196). oklch(44.9% 0.129 275.6), rgb(67, 75, 155).
Aa
White text reads best on this color (7.72:1).
About this color
#434B9B is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.129 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.026 away. White text reads best on it, at 7.72:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.71:1 |
| White text | 7.72:1 |
Values
| HEX | #434B9B |
| RGB | rgb(67, 75, 155) |
| HSL | hsl(235, 40%, 44%) |
| OKLCH | oklch(44.9% 0.129 275.6) |
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 #434B9B | 7.72:1 | AAA | Lc -91.4 | Preferred for body text |
| Black text on #434B9B | 2.71:1 | Fails | Lc 17.4 | Dividers and decoration only |
| #434B9B text on white | 7.72:1 | AAA | Lc 86.6 | Fine for body text |
| #434B9B text on black | 2.71:1 | Fails | Lc -15.5 | 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 800.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F9
oklch(93.6% 0.022 274.7)
-
Step 200
200
#D1D8F5
oklch(88.6% 0.041 274.8)
-
Step 300
300
#B3BDF2
oklch(80.9% 0.076 276.3)
-
Step 400
400
#8C99EB
oklch(70.6% 0.121 276)
-
Step 500
500
#717EE5
oklch(63.1% 0.154 275.7)
-
Step 600
600
#5B65D3
oklch(55.6% 0.167 275.6)
-
Step 700
700
#4B53B7
oklch(49.1% 0.156 275.6)
-
Step 800
800 (this color)
#434B9B
oklch(44.9% 0.129 275.6)
-
Step 900
900
#343A76
oklch(37.6% 0.101 276.1)
-
Step 950
950
#1E2345
oklch(27.1% 0.063 275.1)
#434B9B 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) | #21579E | 0.044 |
| Deuteranopia (no green cones) | #134F99 | 0.047 |
| Tritanopia (no blue cones) | #135D6C | 0.113 |
| Achromatopsia (no color) | #535353 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #434B9B
#434B9B
oklch(44.9% 0.129 275.6)
- #655400
#655400
oklch(45% 0.092 95.4)
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 #434B9B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.026
- Twilight #4E518B ΔE 0.038
- Dark Slate Blue #483D8B ΔE 0.042
- Dusk Blue #26538D ΔE 0.046
- Denim Blue #3B5B92 ΔE 0.049
- Cobalt #1E488F ΔE 0.049
- Dusk #4E5481 ΔE 0.056
- Dusky Blue #475F94 ΔE 0.060
Use #434B9B 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.