#43439C
Closest named color: Blueberry (#464196). oklch(43.4% 0.141 278.8), rgb(67, 67, 156).
Aa
White text reads best on this color (8.32:1).
About this color
#43439C is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.141 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.011 away. White text reads best on it, at 8.32:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.141) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.52:1 |
| White text | 8.32:1 |
Values
| HEX | #43439C |
| RGB | rgb(67, 67, 156) |
| HSL | hsl(240, 40%, 44%) |
| OKLCH | oklch(43.4% 0.141 278.8) |
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 #43439C | 8.32:1 | AAA | Lc -93.0 | Preferred for body text |
| Black text on #43439C | 2.52:1 | Fails | Lc 15.6 | Dividers and decoration only |
| #43439C text on white | 8.32:1 | AAA | Lc 88.4 | Fine for body text |
| #43439C text on black | 2.52:1 | Fails | Lc -13.8 | 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
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E6E9FA
oklch(93.7% 0.023 277.9)
-
Step 200
200
#D2D7F8
oklch(88.6% 0.046 278.6)
-
Step 300
300
#B4BCF6
oklch(80.9% 0.082 278.3)
-
Step 400
400
#8F97F1
oklch(70.7% 0.131 278.6)
-
Step 500
500
#767AED
oklch(63.2% 0.169 278.9)
-
Step 600
600
#6060DB
oklch(55.6% 0.183 278.6)
-
Step 700
700
#504EBE
oklch(49.1% 0.171 278.8)
-
Step 800
800 (this color)
#43439C
oklch(43.4% 0.141 278.8)
-
Step 900
900
#37387A
oklch(37.7% 0.11 279.1)
-
Step 950
950
#202148
oklch(27% 0.071 279.4)
#43439C 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) | #00529F | 0.061 |
| Deuteranopia (no green cones) | #004A9A | 0.058 |
| Tritanopia (no blue cones) | #135869 | 0.123 |
| Achromatopsia (no color) | #4E4E4E | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #43439C
#43439C
oklch(43.4% 0.141 278.8)
- #5E5100
#5E5100
oklch(43.5% 0.09 98.5)
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 #43439C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.011
- Dark Slate Blue #483D8B ΔE 0.031
- Cobalt #1E488F ΔE 0.050
- Twilight #4E518B ΔE 0.054
- Sapphire #2138AB ΔE 0.060
- Dusk Blue #26538D ΔE 0.060
- Rebecca Purple #663399 ΔE 0.067
- Denim Blue #3B5B92 ΔE 0.069
Use #43439C 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.